228 results on '"Local Spread"'
Search Results
2. Genetic and Morphological Variation of Belgian Cyperus esculentus L. Clonal Populations and Their Significance for Integrated Management.
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De Ryck, Sander, Reheul, Dirk, De Riek, Jan, De Keyser, Ellen, and De Cauwer, Benny
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CLONE cells , *YELLOW nutsedge , *AMPLIFIED fragment length polymorphism , *GENETIC variation , *HERBICIDES , *TUBERS - Abstract
Cyperus esculentus is an invasive troublesome neophyte in many arable crops across the globe. Analysis of the genetic and morphological profile of local C. esculentus clonal populations may be useful in explaining differential herbicide sensitivity found among distinct clonal populations and spatial distribution patterns. In this study, 35 Belgian C. esculentus clonal populations, evenly spread across the entire infestation area (30,689 km2) and covering a great diversity of farm and soil types, and hydrological and environmental conditions, were genetically characterized using amplified fragment length polymorphism (AFLP) profiling. These clonal populations were also grouped into different morphological clusters using data from shoot, tuber, and inflorescence number, fresh tuber biomass, individual fresh tuber weight, and number of germinable seeds collected in three consecutive years. Of the 271 AFLP markers, 207 were polymorphic. The gene diversity among clonal populations was 0.331 and three genetically distinct clusters were identified. Depending on observation year, clonal populations were grouped in four to five morphologically distinct clusters that closely aligned with the genetic clusters. The genetically distinct clusters differed in their geographical distribution pattern and range as well as in their morphological characteristics. Clonal populations belonging to clusters with broad distribution ranges produced numerous viable seeds. Clusters with clonal populations that produced large tubers were less widespread than the cluster with clonal populations producing many small tubers. The results suggest that tuber size, tuber number, and fecundity may all play an important role in the spread of C. esculentus. Morphotyping may be very useful in designing effective preventive and curative C. esculentus management strategies. [ABSTRACT FROM AUTHOR]
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- 2023
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3. Non-Small Cell Lung Cancer: Common Types
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Rampinelli, Cristiano, Passaro, Antonio, Casiraghi, Monica, Fanciullo, Cristiana, Regge, Daniele, Series Editor, Sverzellati, Nicola, editor, and Silva, Mario, editor
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- 2020
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4. Investigating Farm Fragmentation as a Risk Factor for Bovine Tuberculosis in Cattle Herds: A Matched Case-Control Study from Northern Ireland.
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Milne, Georgina, Graham, Jordon, McGrath, John, Kirke, Raymond, McMaster, Wilma, and Byrne, Andrew William
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TUBERCULOSIS in cattle ,CATTLE herding ,FARM risks ,FRAGMENTED landscapes ,ANIMAL herds ,CASE-control method - Abstract
Bovine tuberculosis remains a challenging endemic pathogen of cattle in many parts of the globe. Spatial clustering of Mycoacterium bovis molecular types in cattle suggests that local factors are the primary drivers of spread. Northern Ireland's agricultural landscape is comprised of highly fragmented farms, distributed across spatially discontinuous land parcels, and these highly fragmented farms are thought to facilitate localised spread. We conducted a matched case control study to quantify the risks of bovine tuberculosis breakdown with farm area, farm fragmentation, fragment dispersal, and contact with neighbouring herds. Whilst our results show small but significant increases in breakdown risk associated with each factor, these relationships were strongly confounded with the number of contiguous neighbours with bovine tuberculosis. Our key finding was that every infected neighbour led to an increase in the odds of breakdown by 40% to 50%, and that highly fragmented farms were almost twice as likely to have a bTB positive neighbour compared to nonfragmented farms. Our results suggest that after controlling for herd size, herd type, spatial and temporal factors, farm fragmentation increasingly exposes herds to infection originating from first-order spatial neighbours. Given Northern Ireland's particularly fragmented landscape, and reliance on short-term leases, our data support the hypothesis that between-herd contiguous spread is a particularly important component of the region's bovine tuberculosis disease system. [ABSTRACT FROM AUTHOR]
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- 2022
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5. First Report of the Local Spread of Vancomycin-Resistant Enterococci Ascribed to the Interspecies Transmission of a vanA Gene Cluster-Carrying Linear Plasmid
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Yusuke Hashimoto, Izumi Kita, Masato Suzuki, Hidetada Hirakawa, Hirofumi Ohtaki, and Haruyoshi Tomita
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vancomycin-resistant enterococci ,conjugative linear plasmid ,local spread ,interspecies transmission ,Microbiology ,QR1-502 - Abstract
ABSTRACT Vancomycin-resistant enterococci pose a threat in the clinical setting and have been linked to hospital outbreaks worldwide. In 2017, a local spread of VanA-type vancomycin-resistant enterococci (VRE) occurred in Japan, and 25 enterococcal isolates, including 14 Enterococcus faecium, 8 E. raffinosus, and 3 E. casseliflavus isolates, were identified from four inpatients. Molecular analysis of the multispecies of VanA-type VRE revealed the involvement of both the dissemination of clonally related VRE strains between patients and the horizontal transfer of plasmids harboring the vanA gene cluster between Enterococcus spp. Pulsed-field gel electrophoresis showed that the plasmid DNAs without S1 nuclease treatment were able to migrate into the gel, suggesting that the topology of the plasmid was linear. Whole-genome sequencing revealed that this plasmid, designated pELF2, was 108,102 bp long and encoded multiple antimicrobial resistance genes, including ermA and ant(9). The amino acid sequences of putative replication- and transfer-related genes were highly conserved between pELF2 and pELF1, the latter of which was the first identified enterococcal conjugative linear plasmid. On comparing the genomic structure, pELF2 showed the presence of a backbone similar to that of pELF1, especially with respect to the nucleotide sequences of both terminal ends, indicating a hybrid-type linear plasmid, possessing two different terminal structures. pELF2 possessed a broad host range and high conjugation frequencies for enterococci. The easy transfer of pELF2 to different Enterococcus spp. in vitro might explain this local spread of multiple species, highlighting the clinical threat from the spread of antimicrobial resistance by an enterococcal linear plasmid. IMPORTANCE Increasing multidrug resistance, including vancomycin resistance, in enterococci is a major concern in clinical settings. Horizontal gene transfer, such as via plasmids, has been shown to play a crucial role in the acquisition of vancomycin resistance. Among vancomycin resistance types, the VanA type is one of the most prevalent, and outbreaks caused by VanA-type vancomycin-resistant enterococci (VRE) have occurred worldwide. Here, we describe an enterococcal linear plasmid responsible for multispecies local spread of VanA-type VRE. Such a study is important because although hospital outbreaks caused by mixed enterococcal species have been reported, this particular spread indicates plasmid transfer across species. This is a crucial finding because the high risk for such a spread of antimicrobial resistance calls for regular monitoring and surveillance.
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- 2020
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6. Investigating Farm Fragmentation as a Risk Factor for Bovine Tuberculosis in Cattle Herds: A Matched Case-Control Study from Northern Ireland
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Georgina Milne, Jordon Graham, John McGrath, Raymond Kirke, Wilma McMaster, and Andrew William Byrne
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farm fragmentation ,bTB ,bovine tuberculosis ,Northern Ireland ,local spread ,neighbourhood ,Medicine - Abstract
Bovine tuberculosis remains a challenging endemic pathogen of cattle in many parts of the globe. Spatial clustering of Mycoacterium bovis molecular types in cattle suggests that local factors are the primary drivers of spread. Northern Ireland’s agricultural landscape is comprised of highly fragmented farms, distributed across spatially discontinuous land parcels, and these highly fragmented farms are thought to facilitate localised spread. We conducted a matched case control study to quantify the risks of bovine tuberculosis breakdown with farm area, farm fragmentation, fragment dispersal, and contact with neighbouring herds. Whilst our results show small but significant increases in breakdown risk associated with each factor, these relationships were strongly confounded with the number of contiguous neighbours with bovine tuberculosis. Our key finding was that every infected neighbour led to an increase in the odds of breakdown by 40% to 50%, and that highly fragmented farms were almost twice as likely to have a bTB positive neighbour compared to nonfragmented farms. Our results suggest that after controlling for herd size, herd type, spatial and temporal factors, farm fragmentation increasingly exposes herds to infection originating from first-order spatial neighbours. Given Northern Ireland’s particularly fragmented landscape, and reliance on short-term leases, our data support the hypothesis that between-herd contiguous spread is a particularly important component of the region’s bovine tuberculosis disease system.
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- 2022
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7. 八丈島における侵略的外来種アシジロヒラフシアリ Technomyrmex brunneus(膜翅目: アリ科)の分布の拡大
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Terayama, Mamoru, Sunamura, Eiriki, Fujimaki, Ryota, Ono, Takashi, and Eguchi, Katsuyuki
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Hachijo-jima ,Japan ,local spread ,biological invasion ,Technomyrmex brunneus ,nuisance pest - Published
- 2022
8. Cowper's gland hyperplasia: A potential pitfall at MRI of the prostate
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Bryan R. Foster, Kevin R. Turner, Sadhna Verma, Fergus V. Coakley, Omar Kamal, Sungmin Woo, and Tharakeswara K. Bathala
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Male ,medicine.medical_specialty ,Hyperplasia ,business.industry ,Genitourinary system ,Prostate ,Nodule (medicine) ,medicine.disease ,Magnetic Resonance Imaging ,Article ,Diaphragm (structural system) ,Lesion ,Prostate cancer ,medicine.anatomical_structure ,Humans ,Medicine ,Bulbourethral Glands ,Radiology, Nuclear Medicine and imaging ,Radiology ,medicine.symptom ,business ,Retrospective Studies ,Local spread - Abstract
MRI features are presented in a multicenter retrospective series of five patients with a unilateral masslike lesion seen in the genitourinary diaphragm at MRI performed for known or suspected prostate cancer. In all cases, the lesion appeared as an encapsulated 1.3 to 3.0 cm mass of heterogeneous low or intermediate T2 signal intensity in the genitourinary diaphragm, and targeted biopsy demonstrated benign Cowper's gland tissue. This entity is a potential imaging pitfall that could result in a diagnosis of an exophytic nodule of benign prostatic hyperplasia or local spread of prostate cancer. We present these cases to facilitate correct identification of Cowper's gland hyperplasia as an occasional finding at MRI of the prostate.
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- 2021
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9. Vertebral metastases of hematologic malignancies
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Eghbali, H., Pointillart, Vincent, Ravaud, Alain, and Palussière, Jean
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- 2002
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10. Impact of Socioeconomic Deprivation on the Local Spread of COVID-19 Cases Mediated by the Effect of Seasons and Restrictive Public Health Measures: A Retrospective Observational Study in Apulia Region, Italy
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Nicola Bartolomeo, Paolo Trerotoli, Massimo Giotta, and Silvio Tafuri
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COVID-19 ,social inequalities ,deprivation index ,incidence ,restrictive public health measures ,local spread ,generalized estimating equation model ,Italy ,Socioeconomic Factors ,Health, Toxicology and Mutagenesis ,Communicable Disease Control ,Public Health, Environmental and Occupational Health ,Humans ,Public Health ,Seasons - Abstract
The aim of this study was to investigate the spatiotemporal association between socioeconomic deprivation and the incidence of COVID-19 and how this association changes through the seasons due to the existence of restrictive public health measures. A retrospective observational study was conducted among COVID-19 cases that occurred in the Apulia region from 29 February 2020 to 31 December 2021, dividing the period into four phases with different levels of restrictions. A generalized estimating equation (GEE) model was applied to test the independent effect of deprivation on the incidence of COVID-19, taking into account age, sex, and regional incidence as possible confounding effects and covariates, such as season and levels of restrictions, as possible modifying effects. The highest incidence was in areas with a very high deprivation index (DI) in winter. During total lockdown, no rate ratio between areas with different levels of DI was significant, while during soft lockdown, areas with very high DI were more at risk than all other areas. The effects of social inequalities on the incidence of COVID-19 changed in association with the seasons and restrictions on public health. Disadvantaged areas showed a higher incidence of COVID-19 in the cold seasons and in the phases of soft lockdown.
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- 2022
11. CLINICAL STUDY OF THE LOCAL AND REGIONAL SPREAD OF LARYNGEAL CANCER WITH REGARD TO THE SEX OF THE PATIENTS.
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Radosavljević, Slaviša, Živić, Miško, Milošević, Ljubiša, Janićijević, Danijela, and Čanaćević, Saša
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LARYNGEAL cancer , *EPIDEMIOLOGY , *GENDER differences (Psychology) - Abstract
Malignant diseases of the larynx stand for multifactorial diseases. A large body of epidemiological data has shown that long-term alcohol and tabacco use, nutrition and occupation may be the causes of laryngeal cancer. It has been proved that the degree of dysplasia and carcinoma in situ is proportional to the intensity of smoking. Numerous reports have shown that the number of alcohol consumers diagnosed with laryngeal cancer is increasing. The cancerogenic potential of alcohol is enhanced by tobacco use. Laryngeal cancer is the most common head and neck malignancy. The aim of this paper was to investigate characteristics of local and regional spread of laryngeal cancer with regard to the sex of the patients. The subjects of this research were patients of the ENT Clinic, Clinical Center Niš. Prospective investigation included 61 patients with the local and regional spread of laryngeal cancer diagnosed and treated at Clinic during the period 2014-2016. It was found that 61 persons were diagnosed with laryngeal cancer, of which 54 (88.5%) were male and 7 (11.6%) female. The largest number of participants were diagnosed with N0 stage of the regional metastases. The largest number of male participants were in T2 and T3 stage of the local tumor spread. The largest number of women were found to be in T1 stage of the local tumor spread. Statistically significant difference in the the local spread of the tumor with regard to the sex was found (χ2 = 33.07, p <0.001). Further analysis revealed that there was a statistically significant difference between stages T1 and T1a (χ2 = 12.06, p = 0.0005), T1 and T1b (χ2 = 9.59, p = 0.0001), T1 and T2 (χ2 = 18.64; p < 0.0001), T1 and T3 (χ2 = 17.15, p = 0.00003), and T1 i T4 stages (χ2 = 9,59 p =0.011). The largest number of male participants were diagnosed with S2 and S3 stages, whereas the female population was mostly in S2 stage of the disease and statistically significant difference in the stages of laryngeal cancer with regard to the sex of the patients was not found (χ2 = 8.79, p = 0.359). There was predominance of the male patients with laryngeal carcinoma with significantly higher tumor grade compared to females. The significant difference in the stages of laryngeal cancer with regard to the sex of the patients was not found. Acta Medica Medianae 2017;56(3):12-16. [ABSTRACT FROM AUTHOR]
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- 2017
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12. Evaluation of the Control Strategy for the 2010 Foot-and-Mouth Disease Outbreak in Japan Using Disease Simulation.
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Wada, M., Stevenson, M., Cogger, N., and Carpenter, T.
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FOOT & mouth disease , *SIMULATION methods & models , *DISEASE outbreaks , *VACCINATION - Abstract
In 2010, Japan experienced a foot-and-mouth disease ( FMD) epidemic where 292 premises were infected over a period of 75 days. The epidemic was controlled by stamping-out and vaccination, applied 5 weeks after the first confirmation of disease within a 10 km radius of identified infected places. This study aimed at identifying the role of emergency vaccination to epidemic control while adjusting for the dynamic pattern of local spread, and assessing alternative vaccination strategies, using a disease simulation model. Our results indicate that the overall hazard of local spread remained high throughout the silent spread phase and the first two weeks post-detection, with significant reduction occurring from week 3 onwards. The estimated effectiveness of emergency vaccination quantified as reduction in the hazard of infection was at most 81% and 44% for cattle and pig farms, respectively. The vaccination strategy reduced the simulated median number of IPs by 22%, epidemic duration by 64% and culling duration by 52%, but increased the total number of infected or vaccinated premises subject to culling by 144% compared with no vaccination. The simulation indicated that vaccination starting 2 weeks earlier (3 weeks post-first detection) with a smaller vaccination radius (3 km) was more effective for eradication of the epidemic compared with the actually implemented strategy. [ABSTRACT FROM AUTHOR]
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- 2017
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13. Impacts of Natural Environmental Factors and Prevalence of Airway Symptoms on the Local Spread of COVID-19: A Time-Series Analysis in Regional COVID-19 Epidemics
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Shigeki Kushimoto, Michiaki Abe, Yohei Inaba, Shigeo Kure, Tadashi Ishii, Yoshiko Abe, Motoo Fujita, Tetsuya Akaishi, Noriko Sugawara, Kaoru Igarashi, Takashi Nishioka, Shin Takayama, Junichi Tanaka, Akiko Kikuchi, Yukio Katori, Hiroyuki Imai, Ko Onodera, and Yoko Iwamatsu-Kobayashi
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Adult ,Male ,2019-20 coronavirus outbreak ,Time Factors ,Adolescent ,Coronavirus disease 2019 (COVID-19) ,Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ,Environment ,General Biochemistry, Genetics and Molecular Biology ,Young Adult ,Japan ,Environmental health ,Prevalence ,Humans ,Medicine ,Time series ,Child ,Epidemics ,Local spread ,SARS-CoV-2 ,business.industry ,COVID-19 ,General Medicine ,Regression Analysis ,Female ,Cough symptoms ,Contact Tracing ,Airway ,business ,Contact tracing - Abstract
Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is the world's largest public health concern in 2021. This study evaluated the associations of the prevalence of airway symptoms among the tested individuals and data regarding the natural environmental factors with the weekly number of newly diagnosed COVID-19 patients in Sendai City (N
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- 2021
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14. India’s Bio-War against a Pandemic Threat COVID-19
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C. Beula Evangeline and G. N. K. Ganesh
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Coronavirus disease 2019 (COVID-19) ,Transmission (medicine) ,Outbreak ,medicine.disease ,Political science ,Pandemic ,Sore throat ,medicine ,Christian ministry ,Medical emergency ,General Pharmacology, Toxicology and Pharmaceutics ,medicine.symptom ,China ,Local spread - Abstract
Coronavirus is a common type of virus that usually infects humans and results in a high breathing infection. This virus transmits through the air by coughing and sneezing, near physical contacts, and touching virus-contaminated substances or surfaces. Symptoms include runny nose, sore throat, feeling unwell, cough, and fever. The coronavirus outbreak (officially known as COVID-19), which started in China, has so far taken lives of over 190,656 people and affected 2,718,797 people across the world. The infection has spread to 185 countries. According to the official report released by the Ministry of Health and Family Welfare of the Union (MoHFW), 23,077 confirmed cases and 718 deaths have been registered so far in India. The transmission of COVID-19 was successfully controlled by India until now. The Department of Indian Health Science is well organized to control the corona epidemic. The Indian Health Sciences Department and the Regulatory Team (CDSCO) are advancing bio-war against the pandemic by providing effective and constructive updates to the pharmaceutical industry and making it easier for the citizens to prevent transmission in India. The most critical factor in preventing the local spread of the virus is to motivate the public to obtain the right information and take precautions in compliance with the health ministry's warnings.
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- 2020
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15. COVID-19 Public Transit Precautions: Trade-offs between Risk Reduction and Costs
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Lily Hanig, Corey D. Harper, and Destenie Nock
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Finance ,2019-20 coronavirus outbreak ,Coronavirus disease 2019 (COVID-19) ,business.industry ,Geography, Planning and Development ,Trade offs ,Transportation ,Management Science and Operations Research ,Crowding ,Urban Studies ,Public transport ,Automotive Engineering ,TRIPS architecture ,Business ,Preprint ,Civil and Structural Engineering ,General Environmental Science ,Local spread - Abstract
The COVID-19 pandemic has spread globally; however, the risk of contracting COVID-19 on public transportation and its role in local spread remains unclear. Essential workers who are transit-dependent tend to be from low-income and minority populations and are faced with the risk of contracting COVID-19 each time they take a bus. We investigate bus ridership from April to September of 2020 and the risk of contracting COVID-19 on the bus by combining a transportation data analysis and an epidemiological model of COVID-19 risk. Our results show that 4% of county cases were contracted on the bus or from a bus-rider (first degree), disproportionately (52%) from trips that were over their mandated capacity. The risk of contracting COVID-19 on the bus was low, but socially worth mitigating. A cost-benefit analysis reveals that dispatching autonomous vehicles or deploying longer buses for passed-by passengers rather than allowing crowding have the lowest societal costs.
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- 2021
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16. Local patterns of spread of influenza A(H3N2) virus in coastal Kenya over a one-year period revealed through virus sequence data
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John Barnes, Charles N. Agoti, Joyce U. Nyiro, Festus M. Nyasimi, Nickson Murunga, Rebecca Garten, D. James Nokes, Sandra S. Chaves, Joyce M. Ngoi, and D. Collins Owuor
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Kenya ,Data sequences ,Geography ,Spatial clustering ,Period (geology) ,Influenza a ,Demographic surveillance system ,Socioeconomics ,Virus ,Local spread - Abstract
BackgroundThe patterns of spread of influenza A viruses in local populations in tropical and sub-tropical regions are unclear due to sparsity of representative spatiotemporal sequence data.MethodsWe sequenced and analyzed 58 influenza A(H3N2) virus genomes sampled between December 2015 and December 2016 from nine health facilities within the Kilifi Health and Demographic Surveillance System (KHDSS), a predominantly rural region, covering approximately 891 km2along the Kenyan coastline. The genomes were compared with 1,571 contemporaneous global sequences from 75 countries.ResultsWe observed at least five independent introductions of A(H3N2) viruses into the region during the one-year period, with the importations originating from Africa, Europe, and North America. We also inferred 23 virus location transition events between the nine facilities included in the study. International virus imports into the study area were captured at the facilities of Chasimba, Matsangoni, Mtondia, and Mavueni, while all four exports from the region were captured from the Chasimba facility, all occurring to Africa destinations. A strong spatial clustering of virus strains at all locations was observed associated with local evolution.ConclusionOur study shows that influenza A(H3N2) virus epidemics in local populations appear to be characterized by limited introductions followed by significant local spread and evolution.
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- 2021
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17. Research effort on birds’ reservoir host potential for Lyme borreliosis: A systematic review and perspectives
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Maud Marsot, Sara Moutailler, Amalia Rataud, Pierre-Yves Henry, Université Paris-Est (UPE), Mécanismes Adaptatifs et Evolution (MECADEV), Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS), Biologie moléculaire et immunologie parasitaires et fongiques (BIPAR), École nationale vétérinaire d'Alfort (ENVA)-Laboratoire de santé animale, sites de Maisons-Alfort et de Dozulé, Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), DIM1HEALTH, ANSES, École nationale vétérinaire - Alfort (ENVA)-Laboratoire de santé animale, sites de Maisons-Alfort et de Dozulé, and Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)
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Reservoir host ,Research efforts ,MESH: Lyme Disease ,Epidemiology ,030231 tropical medicine ,Tick ,Wild birds ,Birds ,03 medical and health sciences ,0302 clinical medicine ,Ticks ,Emerging infections ,Borrelia ,Animals ,Humans ,MESH: Borrelia ,030304 developmental biology ,Local spread ,Lyme borreliosis ,0303 health sciences ,Lyme Disease ,MESH: Disease Reservoirs ,[SDV.BA.MVSA]Life Sciences [q-bio]/Animal biology/Veterinary medicine and animal Health ,General Veterinary ,General Immunology and Microbiology ,Animal health ,biology ,Ixodes ,Host (biology) ,Ecology ,Local scale ,reservoir host potential ,General Medicine ,bacterial infections and mycoses ,biology.organism_classification ,wild bird ,Tick-Borne Diseases ,[SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie ,research effort - Abstract
International audience; Zoonotic tick-borne diseases threat human and animal health. Understanding the role of hosts in the production of infected ticks in an epidemiological system is essential to be able to design effective measures to reduce the exposure of humans and animals to infectious tick bites. The reservoir host potential, i.e. number of infected ticks produced by a host species, depends on three components: tick production, realized reservoir competence and host density. The parameters and factors that determine the reservoir host potential need to be characterized to achieve a robust understanding of the dynamics of pathogen-tick-host systems, and thus to mitigate the acarological risk of emerging infections. Few studies have investigated the role of birds in the local spread of Lyme borreliosis Borrelia. Knowledge of the research effort on the reservoir host potential of birds in Lyme borreliosis Borrelia circulation is necessary to prioritize future research on this topic. We provide a systematic review of the research effort on components of the reservoir host potential of wild birds for Lyme borreliosis Borrelia circulation, and factors that modulate these components in the European epidemiological system. Our review of 242 selected publications showed that tick production has been 1.4 and 21 times more studied than realized reservoir competence and bird density respectively. Only one study achieved to characterize the global host reservoir potential of birds in a given epidemiological system. Investigated factors were mostly related to bird species identity, individual characteristics of birds and tick characteristics, whereas the influence of bird life-history traits have been largely under-investigated. Because simultaneous characterization of all parameters is notoriously complex, interdisciplinary research is needed to combine and accumulate independent field and laboratory investigations targeting each parameter on specific epidemiological system or host species. This can help gain an integrated appraisal of the functioning of the studied system at a local scale.
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- 2021
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18. Brown-Sequard Syndrome in a Desmoplastic Malignant Mesothelioma Patient: A Rare Complication
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Anouk Serrien, Kristiaan Nackaerts, Mathias Leys, Julie Lambert, and Mike Ralki
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Pulmonary and Respiratory Medicine ,Neurological signs ,Local spread ,Cancer Research ,medicine.medical_specialty ,Brown-Séquard syndrome ,business.industry ,Hematogenous spread ,Hematogenous Spread ,medicine.disease ,Dermatology ,Spinal metastasis ,Paresis ,Oncology ,medicine ,Mesothelioma ,medicine.symptom ,Complication ,Lung cancer ,business - Abstract
ispartof: CLINICAL LUNG CANCER vol:22 issue:4 pages:E552-E554 ispartof: location:United States status: published
- Published
- 2021
19. Thymoma - disease of many faces
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Kateřina Pokorná and Vladimír Kojecký
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Surgical resection ,Adult ,Chemotherapy ,medicine.medical_specialty ,Thymoma ,business.industry ,Paraneoplastic Syndromes ,medicine.medical_treatment ,Usually asymptomatic ,Disease ,Thymus Neoplasms ,medicine.disease ,Thymectomy ,Dermatology ,hemic and lymphatic diseases ,Internal Medicine ,medicine ,Humans ,Anemia, Hemolytic, Autoimmune ,Autoimmune hemolytic anemia ,Cardiology and Cardiovascular Medicine ,business ,Local spread - Abstract
A thymoma belongs to rather rare tumors, although it holds the first place among primary mediastinal tumors in adults. The biological characteristics of thymomas are considerably divergent. The tumors are usually asymptomatic at the begining, later due to a local spread, symptoms from the infiltration or compression of adjacent structures arise, they metastasize rarely. Thymomas are often associated with various autoimmune or endocrinologic diseases. The authors present case of the patient with less common paraneoplasia - autoimmune hemolytic anemia (AIHA). Main strategy of treatment thymom with AIHA isn´t clear. The most important seems to be the early started corticotherapy. Achieving remission of secondary AIHA has importace in following therapy of thymoma - surgical resection or chemotherapy. Thymectomy has positive effect on the course of associated paraneoplastic syndromes and prognosis in general.
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- 2021
20. Spatial patterns and spread of exotic earthworms at local scales1.
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Cameron, Erin K. and Bayne, Erin M.
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EARTHWORMS , *INTRODUCED species , *DENDROBAENA octaedra , *SPECIES distribution , *TAIGAS - Abstract
Given the substantial impacts of non-native species on invaded systems, an understanding of the rates and spatial patterns of invasive spread is critical. Spread may vary across spatial scales, with dispersal of invasive species occurring both via diffusive spread at local sites and long-distance jump dispersal at larger scales. Research on earthworm invasions in North American forests has focused on patterns of spread across landscapes, with less examination of spread at local sites. We sampled the exotic earthworm Dendrobaena octaedra (Savigny, 1826) on 500 m × 500 m grids at three sites in the boreal forest of northeastern Alberta in 2006 and again in 2012-2013 to examine distributional changes over time. Earthworms spread farther from roads (the presumed site of initial introduction) over time, and spatial patterns at our sites suggest transport by vehicles and waterways are key vectors of dispersal at the local level. Spread was estimated to be occurring at a rate of at least 17.9 m/year. Our study indicates that both diffusive spread and jump dispersal of earthworms can be important at local scales and that local diffusive spread may be substantially higher than previously estimated. [ABSTRACT FROM AUTHOR]
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- 2015
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21. Spatial patterns and spread of exotic earthworms at local scales1.
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Cameron, Erin K. and Bayne, Erin M.
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EARTHWORMS ,INTRODUCED species ,DENDROBAENA octaedra ,SPECIES distribution ,TAIGAS - Abstract
Copyright of Canadian Journal of Zoology is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2015
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22. Spatio-temporal patterns of colonization and expansion of Retama monosperma on developing coastal dunes.
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Gallego-Fernández, Juan, Muñoz-Valles, Sara, and Dellafiore, Claudia
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PARKINSONIA aculeata , *SAND dune conservation , *SPATIO-temporal variation - Abstract
Sand stabilization by human plantation is generally considered as one of the most influential factors in biodiversity loss of coastal dune. Frequently, the environmental impact occurs beyond the initial plantation areas due to some planted species are capable to expand to the surrounding dune areas due to sometimes these species exhibiting invasive behavior. Assessing how the spatial and temporal colonization and spread of a shrub species takes place is an arduous task as the initial establishment is influenced by several factors. An understanding of this could be of great importance to the accurate prediction of the course of invasions and establish management plans. In this study, we quantify and analyze the spatio-temporal expansion patterns of the shrub Retama monosperma in a coastal dune landscape. In conjunction with measurements of plant spatial distribution, maturity and dimensions, we use an age-analysis approach to analyze the age structure of the colonizing population and the characteristics of the spread of the R. monosperma population in the early end of a sand spit formed over the last 33 years. The age structure of the dune population suggests that recruitment has increased continuously over time as the population has increased. We found significant differences between age and diameter size structures of dune ridge populations due to their different colonization stages and, in particular, to the environmental conditions. The presence of long-distance dispersers is essential for the spread of R. monosperma in this fragmented landscape. Population expansion is achieved by means of a coupled pattern of radiating wave fronts and the continuous establishment of multiple 'nascent foci' on ridges, which then expand and coalesce. R. monosperma displays lag-phase behavior in the early stages of colonization. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
23. Inter-provincial disparity of COVID-19 transmission and control in Nepal
- Author
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Subas Acharya, Naveen K. Vaidya, Hem Raj Joshi, and Buddhi Pantha
- Subjects
0301 basic medicine ,Coronavirus disease 2019 (COVID-19) ,Mathematics and computing ,Science ,Reproduction (economics) ,Control (management) ,Basic Reproduction Number ,Article ,law.invention ,03 medical and health sciences ,0302 clinical medicine ,Nepal ,law ,Pandemic ,Humans ,030212 general & internal medicine ,Socioeconomics ,Pandemics ,Local spread ,Multidisciplinary ,COVID-19 ,Government Programs ,030104 developmental biology ,Geography ,Transmission (mechanics) ,Medicine ,Infectious diseases ,Disease transmission ,Basic reproduction number - Abstract
Despite the global efforts to mitigate the ongoing COVID-19 pandemic, the disease transmission and the effective controls still remain uncertain as the outcome of the epidemic varies from place to place. In this regard, the province-wise data from Nepal provides a unique opportunity to study the effective control strategies. This is because (a) some provinces of Nepal share an open-border with India, resulting in a significantly high inflow of COVID-19 cases from India; (b) despite the inflow of a considerable number of cases, the local spread was quite controlled until mid-June of 2020, presumably due to control policies implemented; and (c) the relaxation of policies caused a rapid surge of the COVID-19 cases, providing a multi-phasic trend of disease dynamics. In this study, we used this unique data set to explore the inter-provincial disparities of the important indicators, such as epidemic trend, epidemic growth rate, and reproduction numbers. Furthermore, we extended our analysis to identify prevention and control policies that are effective in altering these indicators. Our analysis identified a noticeable inter-province variation in the epidemic trend (3 per day to 104 per day linear increase during third surge period), the median daily growth rate (1 to 4% per day exponential growth), the basic reproduction number (0.71 to 1.21), and the effective reproduction number (maximum values ranging from 1.20 to 2.86). Importantly, results from our modeling show that the type and number of control strategies that are effective in altering the indicators vary among provinces, underscoring the need for province-focused strategies along with the national-level strategy in order to ensure the control of a local spread.
- Published
- 2021
24. Mobility in times of pandemics: Evidence on the spread of COVID19 in Italy's labour market areas
- Author
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Sandro Montresor, Alessandra Faggian, Andrea Ascani, and Alessandro Palma
- Subjects
Excess mortality ,Economics and Econometrics ,Government ,Regional development ,Coronavirus disease 2019 (COVID-19) ,Pandemic ,Individual mobility ,Research questions ,Business ,Economic geography ,Local spread - Abstract
We investigate the interplay between the local spread of COVID-19 and patterns of individual mobility within and across self-contained geographical areas. Conceptually, we connect the debate on regional development in the presence of shocks with the literature on spatial labour markets and address some research questions about the role of individual mobility in affecting the spread of the disease. By looking at granular flows of Facebook users moving within and across Italian labour market areas (LMAs), we analyse whether their heterogeneous internal and external mobility has had a significant impact on excess mortality. We also explore how individual mobility plays different roles in LMAs hosting industrial districts – characterised by a thicker local labour market and denser business and social interactions – and with a high presence of “essential sectors” - activities not affected by the COVID-19 containment measures taken by the Italian government at the onset of the crisis.
- Published
- 2021
25. Feasibility of ultrasound examination in the diagnosis of local spread of thymus tumors
- Author
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D. O. Yevtushenko, D. V. Minuhin, V. V. Kritsak, I. O. Kudrevych, and Ye. S. Yatsenko
- Subjects
Thymus tumors ,Pathology ,medicine.medical_specialty ,business.industry ,Ultrasound ,medicine ,business ,Local spread - Published
- 2021
- Full Text
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26. Impacts of COVID-19 local spread and Google search trend on the US stock market
- Author
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Irina Panovska, Kumer Pial Das, Asim Kumer Dey, and G.M. Toufiqul Hoque
- Subjects
Statistics and Probability ,2019-20 coronavirus outbreak ,Coronavirus disease 2019 (COVID-19) ,Stock market ,Temporal network ,Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ,Statistical and Nonlinear Physics ,Complex network ,Article ,Causality ,Abnormal price ,Volatility ,Econometrics ,Business ,County level ,Covid-19 ,Stock (geology) ,Local spread - Abstract
We develop a novel temporal complex network approach to quantify the US county level spread dynamics of COVID-19. We use both conventional econometric and Machine Learning (ML) models that incorporate the local spread dynamics, COVID-19 cases and death, and Google search activities to assess if incorporating information about local spreads improves the predictive accuracy of models for the US stock market. The results suggest that COVID-19 cases and deaths, its local spread, and Google searches have impacts on abnormal stock prices between January 2020 to May 2020. Furthermore, incorporating information about local spread significantly improves the performance of forecasting models of the abnormal stock prices at longer forecasting horizons.
- Published
- 2020
27. Jitter Evaluation in Distant and Adjacent Muscles after Botulinum Neurotoxin Type A Injection in 78 Cases
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João Aris Kouyoumdjian, Fabio Nazare Oliveira, and Carla Renata Graça
- Subjects
Adult ,Male ,Time Factors ,jitter ,Health, Toxicology and Mutagenesis ,botulinum neurotoxin type A ,Acetylcholine Release Inhibitors ,lcsh:Medicine ,Difficulty swallowing ,Toxicology ,Injections, Intramuscular ,Article ,03 medical and health sciences ,0302 clinical medicine ,otorhinolaryngologic diseases ,Medicine ,Humans ,Botulinum Toxins, Type A ,Local spread ,Jitter ,Aged ,Aged, 80 and over ,0303 health sciences ,myasthenia gravis ,neuromuscular junction ,business.industry ,Botulinum Neurotoxin Type A ,Electromyography ,030302 biochemistry & molecular biology ,lcsh:R ,Mean age ,single-fiber electromyography ,Middle Aged ,Single fiber electromyography ,Treatment Outcome ,Anesthesia ,movement disorders ,Female ,business ,030217 neurology & neurosurgery ,Muscle Contraction - Abstract
To study the jitter parameters in the distant (DM) and the adjacent muscle (AM) after botulinum neurotoxin type A (BoNT/A) injection in 78 patients, jitter was measured by voluntary activation in DM (n = 43), and in AM (n = 35). Patients were receiving BoNT/A injections as a treatment for movement disorders. Mean age 65.1 years (DM) and 61.9 years (AM). The mean jitter was abnormal in 13.9% (maximum 41.4 µ, s) of DM, and 40% (maximum 43.7 µ, s) of AM. Impulse blocking was sparse. We found no correlation of the mean jitter to age, BoNT/A most recent injection (days/units), number of muscles injected, total BoNT/A units summated, number of total BoNT/A sessions, beta-blockers/calcium channel blockers use, and cases with local spread symptoms such as eyelid drop/difficulty swallowing. Maximum mean jitter (41.4/43.7 µ, s) for DM/AM occurred 61 and 131 days since the most recent BoNT/A, respectively. The far abnormal mean jitter (32.6/36.9 µ, s) occurred 229 and 313 days since the most recent BoNT/A. We suggested that jitter measurement can be done after BoNT/A in a given muscle other than the injected one, after 8 (DM) and 11 (AM) months, with reference >, 33 µ, s and >, 37 µ, s, respectively.
- Published
- 2020
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28. Geographic impact of COVID-19 in BLS surveys by industry
- Author
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Michael K. Dalton
- Subjects
2019-20 coronavirus outbreak ,Geography ,Coronavirus disease 2019 (COVID-19) ,Current Population Survey ,Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ,Microdata (statistics) ,Demographic economics ,Current employment ,Job loss ,Local spread - Abstract
Using microdata from the Current Employment Statistics survey and the Current Population Survey, I illustrate how the local spread of coronavirus disease 2019 (COVID-19) has differentially affected industry employment Industries that are not very telework friendly are more likely to have job loss related to its spread In addition, COVID-19's spread appears to be most correlated with temporary job loss, which could partially explain employment numbers improving slightly in May and June 2020
- Published
- 2020
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29. Estimating transportation role in pandemic diffusion in Nigeria: A consideration of 1918-19 influenza and COVID-19 pandemics
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Olabisi Michael Olapoju
- Subjects
2019-20 coronavirus outbreak ,Air transport ,Coronavirus disease 2019 (COVID-19) ,SARS-CoV-2 ,Health Policy ,Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ,Pneumonia, Viral ,Public Health, Environmental and Occupational Health ,COVID-19 ,Nigeria ,Transportation ,History, 20th Century ,History, 21st Century ,Betacoronavirus ,Geography ,Development economics ,Pandemic ,Disease Transmission, Infectious ,Humans ,Coronavirus Infections ,Pandemics ,Influenza Pandemic, 1918-1919 ,Research Theme 1: COVID-19 Pandemic ,Local spread - Abstract
Background: The focus of the study is to assess the role of different transport means in the importation and diffusion of 1918-19 influenza and a novel 2019 corona virus designated as COVID-19 in Nigeria. Methods: The study provides a review of the means by which the two pandemics were imported into the country and the roles the transport means of each period played in the local spread of the epidemics. Results: The study notes that seaports and railways, being the emerging transportation modes in the country were significant to the importation and local diffusion of 1918-19 influenza, respectively, while air transport is significant to the importation of the current COVID-19 pandemic. Conclusions: The study concludes that increasing preference for the transport at a given epoch is significant to the diffusion of prevailing epidemic in the epoch.
- Published
- 2020
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30. Candida auris Fungemia and a local spread taken under control with infection control measures: First report from Turkey
- Author
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Zeynep Yazgan, Ayse Baris, Gökhan Aygün, Ayşe Serife Oz, Fehmi Tabak, Bilgul Mete, IIker Inanc Balkan, Mert Ahmet Kuşkucu, Ahmet Furkan Kurt, and Ayşe İstanbullu Tosun
- Subjects
0301 basic medicine ,Microbiology (medical) ,Antifungal ,Local spread ,Turkey ,medicine.drug_class ,030106 microbiology ,Local Spread ,Microbiology ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Infection control ,Humans ,030212 general & internal medicine ,Pathogen ,Fungemia ,Aged, 80 and over ,Infection Control ,business.industry ,Outbreak ,Candida auris ,medicine.disease ,business - Abstract
Candida auris, draws attention as a new emerging antifungal resistant pathogen, leading to healthcare-associated infections and outbreaks. This is the first report of C. auris fungemia in a 81-year-old patient, confirmed by sequential analysis, from Turkey. Although the source of the isolate could not be identified, its spread in the hospital has been taken under control by effective infection control measures.
- Published
- 2020
31. Coding-Complete Genome Sequences of Two SARS-CoV-2 Isolates from Early Manifestations of COVID-19 in Israel
- Author
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Gad Segal, Ofir Israeli, Anat Zvi, Oran Erster, Adi Beth-Din, Dana Stein, Michal Mandelboim, Hagit Achdout, Ohad Shifman, Gili Regev-Yochay, Shmuel C. Shapira, Shay Weiss, Inbar Cohen-Gihon, and Shmuel Yitzhaki
- Subjects
2019-20 coronavirus outbreak ,Coronavirus disease 2019 (COVID-19) ,Immunology and Microbiology (miscellaneous) ,viruses ,Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ,Genome Sequences ,Genetics ,Biology ,Genome ,Virology ,Molecular Biology ,Virus ,Local spread - Abstract
We announce the genome sequences of two strains of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) isolated in Israel, one imported by a traveler who returned from Japan and the second strain collected from a patient infected by a traveler returning from Italy. The sequences obtained are valuable as early manifestations for future follow-up of the local spread of the virus in Israel.
- Published
- 2020
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32. How I treat neurologic complications in patients with lymphoid cancer
- Author
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Lakshmi Nayak and Tracy T. Batchelor
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Nervous system ,Pediatrics ,medicine.medical_specialty ,Lymphoma ,business.industry ,Paraneoplastic Syndromes ,Immunology ,Cancer ,Cell Biology ,Hematology ,Neurologic Effect ,medicine.disease ,Biochemistry ,medicine.anatomical_structure ,Neoplasms ,Medicine ,Humans ,In patient ,Presentation (obstetrics) ,Nervous System Diseases ,business ,Local spread - Abstract
Neurologic complications of lymphoid cancer can be challenging to recognize and treat. The nervous system can be affected directly by hematogenous or local spread of lymphoma. Indirect neurologic effects of lymphoma include paraneoplastic syndromes and vascular complications. Lymphoma treatments can also cause neurologic complications. Early identification and treatment are crucial to stabilize or reverse neurologic deficits, prevent further nervous system injury, and optimize overall oncologic therapy. This article provides an overview of the different neurologic complications of lymphoma and its treatments, in addition to presenting case studies that emphasize commonly encountered clinical scenarios.
- Published
- 2020
33. Clavicular Osteomyelitis Secondary to Candida Parapsilosis Infection
- Author
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John Roxborough, Dean Davis, Priyanka Bhandari, Eukesh Ranjit, and Amit Sapra
- Subjects
Antifungal ,medicine.medical_specialty ,candidal infection ,medicine.drug_class ,medicine.medical_treatment ,030204 cardiovascular system & hematology ,family practice ,Candida parapsilosis ,rare infection ,Imaging modalities ,03 medical and health sciences ,0302 clinical medicine ,clavicular osteomyelitis ,Biopsy ,medicine ,multidisciplinary team ,Local spread ,general practice ,Debridement ,biology ,medicine.diagnostic_test ,business.industry ,Osteomyelitis ,fungal infection ,General Engineering ,Surgical debridement ,osteomyelitis ,medicine.disease ,biology.organism_classification ,Surgery ,candida parapsilosis ,business ,debridement ,030217 neurology & neurosurgery ,Family/General Practice - Abstract
Candida parapsilosis osteomyelitis is a rare diagnosis. Candidal infection can occur via hematogenous or local spread. A localized swelling around a bony structure should raise clinical suspicion. Diagnosis is made by a combination of imaging modalities and biopsy. Anecdotal case reports have been reported in medical literature and treatment guidelines are very limited. Treatment modality includes a combination of surgical debridement and antifungal therapy.
- Published
- 2020
34. Review: Plant-pathogen interactions through the plasmodesma prism
- Author
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Tessa M. Burch-Smith and Elena E. Ganusova
- Subjects
0106 biological sciences ,0301 basic medicine ,Plasmodesmata ,food and beverages ,Plant Immunity ,Plant Science ,General Medicine ,Plasmodesma ,Computational biology ,Plants ,Biology ,01 natural sciences ,03 medical and health sciences ,030104 developmental biology ,Host-Pathogen Interactions ,Genetics ,Plant defense against herbivory ,Agronomy and Crop Science ,Pathogen ,010606 plant biology & botany ,Local spread - Abstract
Plasmodesmata (PD) allow membrane and cytoplasmic continuity between plant cells, and they are essential for intercellular communication and signaling in addition to metabolite partitioning. Plant pathogens have evolved a variety of mechanisms to subvert PD to facilitate their infection of plant hosts. PD are implicated not only in local spread around infection sites but also in the systemic spread of pathogens and pathogen-derived molecules. In turn, plants have developed strategies to limit pathogen spread via PD, and there is increasing evidence that PD may also be active players in plant defense responses. The last few years have seen important advances in understanding the roles of PD in plant-pathogen infection. Nonetheless, several critical areas remain to be addressed. Here we highlight some of these, focusing on the need to consider the effects of pathogen-PD interaction on the trafficking of endogenous molecules, and the involvement of chloroplasts in regulating PD during pathogen defense. By their very nature, PD are recalcitrant to most currently used investigative techniques, therefore answering these questions will require creative imaging and novel quantification approaches.
- Published
- 2019
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35. Predicting Growth of COVID-19 Confirmed Cases in Each U.S. County with a Population of 50,000 or More, Revised July 8, 2020
- Author
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Leon S. Robertson
- Subjects
education.field_of_study ,Geography ,Coronavirus disease 2019 (COVID-19) ,business.industry ,Health care ,Population ,business ,education ,Local spread ,Demography - Abstract
A simple model of local spread of COVID-19 is needed to assist local governments and health care providers prepare for surges of clinical cases in their communities. National and state based models are inadequate because the virus is introduced and spreads at different rates in local areas. In the U.S. as of July 3, 2020, 73 percent of cases and 84 percent of deaths occurred in the 200 counties with the most cases and deaths. Each county has its own function of cases in time that can be used to predict increases in reported cases two weeks in advance for each of 988 counties in the U.S. with populations of 50,000 or more inhabitants. A logarithmic model based on growth in cases during the past 30 days is substantially predictive of increase in cases during the subsequent 14 days. Predicted increase in cases for the 988 U.S. counties will be published online daily.
- Published
- 2020
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36. Radiation Rectovaginal Fistula
- Author
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Killingback, Mark
- Published
- 2006
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37. Comparison of Amyloid β and Tau Spread Models in Alzheimer’s Disease
- Author
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Jae Seung Kim, Sang Won Seo, Peter Lee, Jee Hoon Roh, Hang-Rai Kim, Yong Jeong, Seung Jun Oh, Minyoung Oh, and Jungsu S. Oh
- Subjects
Male ,Amyloid ,Amyloid β ,Cognitive Neuroscience ,Models, Neurological ,tau Proteins ,Disease ,Biology ,050105 experimental psychology ,03 medical and health sciences ,Cellular and Molecular Neuroscience ,0302 clinical medicine ,Alzheimer Disease ,medicine ,Animals ,Humans ,0501 psychology and cognitive sciences ,Aged ,Local spread ,Aged, 80 and over ,Neurons ,Brain network ,Amyloid beta-Peptides ,05 social sciences ,Brain ,Original Articles ,Human brain ,Middle Aged ,medicine.disease ,Aβ deposition ,medicine.anatomical_structure ,Positron-Emission Tomography ,Female ,Tauopathy ,Neuroscience ,030217 neurology & neurosurgery - Abstract
Tau and amyloid β (Aβ), 2 key pathogenic proteins in Alzheimer’s disease (AD), reportedly spread throughout the brain as the disease progresses. Models of how these pathogenic proteins spread from affected to unaffected areas had been proposed based on the observation that these proteins could transmit to other regions either through neural fibers (transneuronal spread model) or through extracellular space (local spread model). In this study, we modeled the spread of tau and Aβ using a graph theoretical approach based on resting-state functional magnetic resonance imaging. We tested whether these models predict the distribution of tau and Aβ in the brains of AD spectrum patients. To assess the models’ performance, we calculated spatial correlation between the model-predicted map and the actual map from tau and amyloid positron emission tomography. The transneuronal spread model predicted the distribution of tau and Aβ deposition with significantly higher accuracy than the local spread model. Compared with tau, the local spread model also predicted a comparable portion of Aβ deposition. These findings provide evidence of transneuronal spread of AD pathogenic proteins in a large-scale brain network and furthermore suggest different contributions of spread models for tau and Aβ in AD.
- Published
- 2018
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38. Bilateral knee septic arthritis: Was it from sternal wound?
- Author
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Chong, Han Hong
- Subjects
medicine.medical_specialty ,business.industry ,Case Report ,Case Reports ,General Medicine ,030230 surgery ,bacterial infections and mycoses ,medicine.disease ,Wound infection ,infection ,Surgery ,03 medical and health sciences ,0302 clinical medicine ,Orthopedic surgery ,medicine ,wound infection ,Septic arthritis ,Potential source ,030212 general & internal medicine ,orthopedic ,septic arthritis ,business ,bilateral ,Local spread - Abstract
Key Clinical Message Polyarticular septic arthritis is a rare but life‐threatening condition and should not be underestimated. Clinicians should look for potential source of infection, either local spread or hematogenous distribution. However, this should not delay the main treatment for septic arthritis.
- Published
- 2018
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39. Bejel, a Nonvenereal Treponematosis, among Men Who Have Sex with Men, Japan
- Author
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Takuya Kawahata, Koh Shinohara, Tsunehiro Shimizu, Kazushi Motomura, Keiichi Furubayashi, Haruyo Mori, Jun Komano, and Yoko Kojima
- Subjects
Male ,Sexually Transmitted Diseases, Bacterial ,Epidemiology ,syphilis ,men who have sex with men ,lcsh:Medicine ,Subspecies ,urologic and male genital diseases ,Men who have sex with men ,0302 clinical medicine ,Japan ,Public Health Surveillance ,030212 general & internal medicine ,Homosexuality ,Bejel ,bacteria ,Phylogeny ,media_common ,Treponema ,biology ,Treponema pallidum subsp. endemicum ,Infectious Diseases ,Geography ,Treponematosis ,Adult ,Microbiology (medical) ,nonvenereal treponematoses ,nonvenereal treponematosis ,media_common.quotation_subject ,030231 tropical medicine ,lcsh:Infectious and parasitic diseases ,Young Adult ,03 medical and health sciences ,Research Letter ,medicine ,Humans ,lcsh:RC109-216 ,Treponema pallidum ,MSM ,Homosexuality, Male ,sexually transmitted infections ,Local spread ,Treponemal Infections ,lcsh:R ,Sequence Analysis, DNA ,medicine.disease ,biology.organism_classification ,Bejel, a Nonvenereal Treponematosis, among Men Who Have Sex with Men, Japan ,Genes, Bacterial ,Syphilis ,Demography - Abstract
Bejel, an endemic treponematosis caused by infection with Treponema pallidum subspecies endemicum, has not been reported in eastern Asia and the Pacific region. We report local spread of bejel among men who have sex with men in Japan. Spread was complicated by venereal syphilis.
- Published
- 2019
40. ROLE OF CONTRAST ENHANCED COMPUTED TOMOGRAPHY SCAN IN DIAGNOSIS OF LOCAL SPREAD, DISTANT METASTASIS AND STAGING OF BREAST CARCINOMA
- Author
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Suresh Kumar Saini Dr, Harsh Vardhan Khokhar Dr, Sangeeta Saxena Dr, and Dharm Raj Meena Dr
- Subjects
medicine.medical_specialty ,medicine.diagnostic_test ,business.industry ,media_common.quotation_subject ,medicine ,Contrast (vision) ,Distant metastasis ,Computed tomography ,Radiology ,Breast carcinoma ,business ,Local spread ,media_common - Abstract
Background: Breast cancer is the most common cause of cancer death for women worldwide. The accurate clinical staging of patients with breast cancer is important in determining the most appropriate treatment. The present study investigated the value of staging CECT in detecting asymptomatic distant (lung, liver and bone) metastases in patients with primary breast cancer. Material And Method: 30 patients with Breast Imaging Reporting and Data System category (BI-RADS) 4, 5 and 6 lesions underwent unenhanced breast CTand contrast material enhanced CTbefore histopathological correlation. Result And Discussion: In present study, 5(16.6%) cases shows metastasis into the lungs, 3(10%) cases shows metastasis into the liver, 3(10%) cases shows metastasis into the bones, 1(3.3%)case show metastasis into multiple site(lung and liver), 18(60%) cases shows no any evidence of metastasis. By contrast, 12 of 30 patients (40%) with stage III were upstaged to stage IV and 13 patients (43.3%) of those were originally stage IIIB or IIIC. Conclusion:CECTappears as an essential imaging modality to detect presence, extent and localisation of metastasis.
- Published
- 2021
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41. A RARE CASE OF STERNAL EROSION DUE TO BRONCHOGENIC CARCINOMA.
- Author
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Pandit, Sudipta, Das, Anirban, Das, Sibes K., Choudhury, Sabyasachi, and Mukherjee, Somnath
- Subjects
- *
STERNUM , *LUNG cancer , *LYMPH nodes , *SQUAMOUS cell carcinoma , *CHEST (Anatomy) , *DISEASES - Abstract
BACKGROUND: Primary sternal malignancy is very uncommon. Secondary sternal malignancy is usually caused by either hematological dissemination or by direct extension due to parasternal lymph node involvement from breast or lung carcinoma. CASE DETAILS: A 72 years old smoker presented with a dull aching pain over the sternum. Computed tomography (CT) of the thorax revealed osteolytic erosion of manubrium sterni, along with a mass of lesion in the upper lobe of left lung and left sided mediastinal lymphadenopathy. CT guided fine needle aspiration cytology (FNAC) of the left lung mass showed squamous cell carcinoma and FNAC of the sternal lesion revealed metastatic squamous cell carcinoma. CONCLUSION: Direct erosion of sternum in case of squamous cell carcinoma of lung is a rarity. We have reported this case to increase the awareness of clinicians regarding the possibility of direct sternal involvement from lung cancer. Moreover, local removal can improve the prognosis. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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- View/download PDF
42. Risk factors for local spread of foot-and-mouth disease, 2010 epidemic in Japan
- Author
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Hayama, Y., Muroga, N., Nishida, T., Kobayashi, S., and Tsutsui, T.
- Subjects
- *
FOOT & mouth disease , *EPIDEMICS , *PREVENTIVE medicine , *LABORATORY swine , *HEALTH risk assessment , *CLUSTER analysis (Statistics) - Abstract
Abstract: To provide a basis for effective foot-and-mouth disease (FMD) prevention measures, factors associated with local spread were investigated in this study using data of the 2010 FMD epidemic in Japan. Thirty-eight local clusters within a 500-m radius from source farms were selected. In the clusters with pig source farms, more neighboring farms were infected in a short time compared with the clusters with cattle source farms. The influence of distance and wind upon local spread did not show a significant difference between infected and noninfected neighboring farms. Large-size pig farms posed a greater risk of inducing local spread; the odds ratio with reference to small-size cattle farms was 16.73. Middle-size and large-size cattle farms had a greater risk of infection; odds ratios with reference to small-size cattle farms were 15.65 and 25.52, respectively. The present results are useful for understanding features of local spread and prioritizing farms for control measures. [Copyright &y& Elsevier]
- Published
- 2012
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43. Analysis of Local Spread of Equine Influenza in the Park Ridge Region of Queensland.
- Author
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Davis, J., Garner, M. G., and East, I. J.
- Subjects
- *
EQUINE influenza , *COMMUNICABLE diseases in animals , *AEROSOLS - Abstract
In 2007, an incursion of equine influenza (EI) occurred in Australia. Accurate maps of property boundaries were used to examine the pattern and mechanism of local spread of EI. This study focussed on a cluster of infected premises (IPs) at Park Ridge, a peri-urban suburb 26 km south of Brisbane, Queensland. The cluster recorded 437 IPs and 81% of these were not contiguous to a previously IP. The mean distance from each new IP to the closest previous IP was 0.85 ± 1.50 km with a range of 0.01–12.94 km. Eighty-two percent of new IPs were within 1 km of a previous IP. The spatial mean for each week’s new IPs showed a consistent trend of movement from east to west throughout the epizootic consistent with the predominant wind patterns. The findings were consistent with the conclusion that EI will routinely spread over 1–2 km via wind-borne aerosol. [ABSTRACT FROM AUTHOR]
- Published
- 2009
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44. Identification of an Arabidopsis thaliana protein that binds to tomato mosaic virus genomic RNA and inhibits its multiplication
- Author
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Fujisaki, Koki and Ishikawa, Masayuki
- Subjects
- *
RNA , *NUCLEIC acids , *BIOMOLECULES , *ARABIDOPSIS thaliana - Abstract
Abstract: The genomic RNAs of positive-strand RNA viruses carry RNA elements that play positive, or in some cases, negative roles in virus multiplication by interacting with viral and cellular proteins. In this study, we purified Arabidopsis thaliana proteins that specifically bind to 5'' or 3'' terminal regions of tomato mosaic virus (ToMV) genomic RNA, which contain important regulatory elements for translation and RNA replication, and identified these proteins by mass spectrometry analyses. One of these host proteins, named BTR1, harbored three heterogeneous nuclear ribonucleoprotein K-homology RNA-binding domains and preferentially bound to RNA fragments that contained a sequence around the initiation codon of the 130K and 180K replication protein genes. The knockout and overexpression of BTR1 specifically enhanced and inhibited, respectively, ToMV multiplication in inoculated A. thaliana leaves, while such effect was hardly detectable in protoplasts. These results suggest that BTR1 negatively regulates the local spread of ToMV. [Copyright &y& Elsevier]
- Published
- 2008
- Full Text
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45. Modelling local dispersal of bluetongue virus serotype 8 using random walk
- Author
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Gerbier, G., Baldet, T., A.Tran, Hendrickx, G., Guis, H., Mintiens, K., Elbers, A.R.W., and Staubach, C.
- Subjects
- *
BLUETONGUE virus , *COMMUNICABLE diseases , *ORBIVIRUS infections in animals , *FARM management - Abstract
Abstract: The knowledge of the place where a disease is first introduced and from where it later spreads is a key element for the understanding of an epizootic. For a contagious disease, the main method is back tracing. For a vector-borne disease such as the Bluetongue virus serotype 8 epizootic that occurred in 2006 in North-Western Europe, the efficiency of tracing is limited because many infected animals are not showing clinical signs. In the present study, we propose to use a statistical approach, random walk, to model local spread in order to derive the Area of First Infection (AFI) and spread rate. Local spread is basically described by the random movements of infected insect vectors. Our model localised the AFI centre, origin of the infection, in the Netherlands, South of Maastricht. This location is consistent with the location of the farms where the disease was first notified in the three countries (Netherlands, Belgium, and Germany) and the farm where retrospectively the earliest clinical signs were found. The derived rate of spread of 10–15km/week is consistent with the rates observed in other Bluetongue epizootics. In another article Mintiens (2008), the AFI definition has then been used to investigate possible ways of introduction (upstream tracing) and to study the effect of animal movements from this area (downstream tracing). [Copyright &y& Elsevier]
- Published
- 2008
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46. Molecular characterization of KPC-producing Klebsiella pneumoniae isolated from patients in a Public Hospital in Caracas, Venezuela
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Howard Takiff, Aura Dayana del Carmen Falco Restrepo, and Mariel Alexandra Velásquez Nieves
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Male ,0301 basic medicine ,Microbiology (medical) ,Transposable element ,Klebsiella pneumoniae ,030106 microbiology ,Locus (genetics) ,Polymerase Chain Reaction ,beta-Lactamases ,Microbiology ,03 medical and health sciences ,Plasmid ,Bacterial Proteins ,parasitic diseases ,Drug Resistance, Bacterial ,Genotype ,polycyclic compounds ,Humans ,Medicine ,Typing ,Gene ,Local spread ,biology ,Hospitals, Public ,business.industry ,bacterial infections and mycoses ,Venezuela ,biology.organism_classification ,Multilocus sequence typing ,Female ,business - Abstract
Introduction Klebsiella pneumoniae carbapenemase (KPC)-producing bacteria are amongst the most important causative agents of nosocomial infections worldwide. Isolates of this bacterium have been identified in Venezuela but little is known about their local spread. The aim of this study was to perform the molecular characterization of KPC-producing strains isolated from 2012 to 2013 in a public hospital in Caracas, Venezuela. Methods Twenty-two K. pneumoniae clinical isolates phenotypically classified as KPC producing were subjected to PCR screening for the presence of blaKPC genes and their location within transposon Tn4401. The blaKPC PCR product was sequenced to identify the KPC alleles. Genotypic analysis was performed by means of repetitive extragenic palindromic PCR (rep-PCR) and Multi Locus Sequence Typing (MLST). Finally, conjugation and electroporation assays were used to determine whether the blaKPC genes were found in plasmids. Results All isolates contained the blaKPC-2 variant, and 21 of the 22 were associated with the Tn4401b isoform. The strains were distributed in 8 sequence types (ST), three of which were new. Conjugation and electroporation assays indicated that 95.5% (n = 21/22) of the isolates contained the blaKPC gene in plasmids. Conclusions This study on circulating bacterial strains and the identification of KPC alleles may help to understand the routes of dissemination and control their spread within this hospital.
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- 2017
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47. THE EXPERIENCE OF USING ULTRASOUND WITH CONTRAST ENHANCEMENT IN THE DIAGNOSIS OF CERVICAL CANCER
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M. A. Chekalova, Z. R.-B., Musaeva, V. S. Kryazheva, V. V. Kuznetsov, and A. G. Margaryan
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0301 basic medicine ,Cervical cancer ,Cancer Research ,medicine.medical_specialty ,Contrast enhancement ,business.industry ,cervical cancer ,Ultrasound ,сontrast еnhanced ultrasound ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,ultrasonography ,medicine.disease ,03 medical and health sciences ,030104 developmental biology ,0302 clinical medicine ,Oncology ,030220 oncology & carcinogenesis ,medicine ,contrast enhancement ,Radiology ,Ultrasonography ,business ,RC254-282 ,Local spread - Abstract
The purpose of the study was to evaluate the value of contrast-enhanced ultrasound in detecting local spread, regional and distant metastases from cervical cancer. Materials and methods. The findings of contrast-enhanced ultrasound examination of 4 cervical cancer patients (IB1–IVB) treated at N.N. Blokhin Russian Cancer Research Center from September to October 2016 were evaluated. The HI VISION Ascendus device was used. Ultrasound patterns in different phases of contrast-enhanced accumulation and excretion were analyzed. Results. Our first experience in using contrast-enhanced ultrasound in the detection of local spread, regional and distant metastases from cervical cancer allowed us to study the structure of the tumor and its spread in greater detail. Conclusion. A small number of observations do not yet allow us to draw serious conclusions about the capabilities of this modern technology.
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- 2017
48. Angiosarcoma of the Scalp and Face: A Hard to Treat Tumor
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Omar Jmour, Farouk Benna, Lotfi Kochbati, and Sahar Ghith
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Chemotherapy ,medicine.medical_specialty ,business.industry ,medicine.medical_treatment ,Multimodality Treatment ,medicine.disease ,Metastasis ,Radiation therapy ,medicine.anatomical_structure ,Scalp ,medicine ,Angiosarcoma ,Radiology ,business ,Local spread - Abstract
Cutaneous angiosarcoma is a rare and aggressive malignant tumor of vascular origin. Multimodality treatment including surgery, radiotherapy and chemotherapy should be used according to age and local spread. Prognosis is poor with a 5-year survival of 10-15%. We report the case of an angiosarcoma of the scalp and face treated with sequential contact radiotherapy and chemotherapy. After local response, the patient progressed in non-irradiated zone then had liver metastasis.
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- 2017
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49. ROLE OF MRI IN PRIMARY BONE TUMORS AND ASSESSING THEIR LOCAL SPREAD
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Dinesh Sethi Dr, Kavita Vani Dr, Yashvant Singh Dr, Rushil Jain Dr, and Namrita Sachdev Dr
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medicine.medical_specialty ,Primary bone ,business.industry ,Medicine ,Radiology ,business ,Local spread - Abstract
Background Radiographs are the most valuable modality for diagnosis of bone tumors, however MRI is emerging as the modality of choice for assessing local spread of tumor. Objective To assess role of MRI in local spread of tumor and comparison to surgical & histo-pathological results. Results 47 patients ( age 10-73 years with mean age of 38 years) were studied from May 2018 to November 2019. There were 26 males and 21 females, 9 patients were excluded as no operative results were available. Out of the 38 total cases, 11 were osteosarcoma, 7 were Ewing’s sarcoma, 7 were GCT, 6 were Chondrosarcoma, 2 Osteochondroma, 1 PNET, 1 ABC, 1 Hemangioma, 1 Chordoma and 1 Multiple myeloma. Cortical break was detected in 29 patients on MRI with 2 false positive cases showing 93% accuracy. Medulla involvement was detected in 34/35 patients (97%). Neuro-vascular involvement was detected in 9 patients on MRI with 1 false positive cases showing 88.9% accuracy. Joint involvement was detected in 13 patients on MRI with 2 false positive cases showing 84.6% accuracy. All 4 cases of skip lesion (100%) were detected on MRI. Conclusion MRI is the modality of choice to assess for local spread of bone tumors.
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- 2020
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50. SARS-CoV-2 infection in 86 healthcare workers in two Dutch hospitals in March 2020
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Suzan D. Pas, Marjolein F.Q. Kluytmans, Miranda van Rijen, Robbert G. Bentvelsen, Anne J.G. van Oudheusden, Wouter van den Bijllaardt, Jaco J. Verweij, Marion Koopmans, Jan Kluytmans, and Anton Buiting
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Pediatrics ,medicine.medical_specialty ,High prevalence ,Coronavirus disease 2019 (COVID-19) ,business.industry ,health care facilities, manpower, and services ,Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ,education ,virus diseases ,Outbreak ,Regimen ,Health care ,medicine ,Early phase ,business ,Local spread - Abstract
BackgroundOn February 27, 2020, the first patient with COVID-19 was reported in the Netherlands. During the following weeks, nine healthcare workers (HCWs) were diagnosed with COVID-19 in two Dutch teaching hospitals, eight of whom had no history of travel to China or Northern-Italy. A low-threshold screening regimen was implemented to determine the prevalence and clinical presentation of COVID-19 among HCWs in these two hospitals.MethodsHCWs who suffered from fever or respiratory symptoms were voluntarily tested for SARS-CoV-2 by real-time reverse-transcriptase PCR on oropharyngeal samples. Structured interviews were conducted to document symptoms for all HCWs with confirmed COVID-19.FindingsThirteen-hundred fifty-three (14%) of 9,705 HCWs employed were tested, 86 (6%) of whom were infected with SARS-CoV-2. Most HCWs suffered from relatively mild disease and only 46 (53%) reported fever. Eighty (93%) HCWs met a case definition of fever and/or coughing and/or shortness of breath. None of the HCWs identified through the screening reported a travel history to China or Northern Italy, and 3 (3%) reported to have been exposed to an inpatient known with COVID-19 prior to the onset of symptoms.InterpretationWithin two weeks after the first Dutch case was detected, a substantial proportion of HCWs with fever or respiratory symptoms were infected with SARS-CoV-2, probably caused by acquisition of the virus in the community during the early phase of local spread. The high prevalence of mild clinical presentations, frequently not including fever, asks for less stringent use of the currently recommended case-definition for suspected COVID-19.RESEARCH IN PERSPECTIVEEvidence before this studyThis study was conducted in response to the global spread of SARS-CoV-2, and the detection of eight healthcare workers (HCWs) in two Dutch teaching hospitals within two weeks after the first patient with COVID-19 was detected in the Netherlands who had no history of travel to China or Northern-Italy, raising the question of whether undetected community circulation was occurring.Added value of this studyTo the best of our knowledge, this report is the first to describe the prevalence, the clinical presentation and early outcomes of COVID-19 in HCWs, which may be helpful for others seeking to identify HCWs suspected for COVID-19 in an outbreak situation.Implications of all the available evidenceWe describe that within two weeks after the first Dutch case was detected, a substantial proportion of HCWs with fever or (mild) respiratory symptoms were infected with SARS-CoV-2, probably caused by acquisition of the virus in the community during the early phase of local spread. The high prevalence of mild clinical presentations, frequently not including fever, asks for less stringent use of the currently recommended case-definition for suspected COVID-19.
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- 2020
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