11 results on '"Aripuanã Sakurada Aranha Watanabe"'
Search Results
2. Excess mortality is associated with influenza A (H1N1) in patients with severe acute respiratory illness
- Author
-
Flavia Queiroz, Livia Gonçalez de Godoy, Nathália Pimentel Furlan, Maria Lúcia Machado Salomão, Estela Silva Simões, Guilherme Hirassawa Sacillotto, Rayane Estefani Ribas Da Silva Teixeira, Inara Cristina Marciano Frini, Maurício Lacerda Nogueira, Luis Henrique Simões Covello, Aripuanã Sakurada Aranha Watanabe, Neymar Elias de Oliveira, Suzana Margareth Lobo, Joelma Vilafanha Gandolfi, and Karina Rocha Dutra
- Subjects
Adult ,Male ,0301 basic medicine ,medicine.medical_specialty ,ARDS ,Oseltamivir ,030106 microbiology ,Population ,Antiviral Agents ,Virus ,Time-to-Treatment ,03 medical and health sciences ,chemistry.chemical_compound ,Influenza A Virus, H1N1 Subtype ,0302 clinical medicine ,Risk Factors ,Virology ,Internal medicine ,Influenza, Human ,Pandemic ,Humans ,Medicine ,Hospital Mortality ,030212 general & internal medicine ,Respiratory system ,education ,Prospective cohort study ,Respiratory Tract Infections ,Aged ,Inflammation ,Respiratory Distress Syndrome ,education.field_of_study ,business.industry ,virus diseases ,Influenza a ,Middle Aged ,medicine.disease ,Infectious Diseases ,chemistry ,Influenza Vaccines ,Female ,business - Abstract
Background Acute respiratory infections caused by viruses are among the leading causes of morbidity and mortality. The inflammatory response that follows viral infection is important for the control of virus proliferation. However, if overwhelming, may be associated with complicated outcomes. Objectives We assessed the clinical characteristics of patients with severe acute respiratory illness (SARI) evolving to acute respiratory distress syndrome (ARDS) and the factors related to death. Study design. Prospective study in 273 adult patients with SARI performed in a university-affiliated 800-bed hospital serving an area of epidemiologic vigilance of 102 municipalities and more than 2 million inhabitants. Influenza A (H1N1) 2009 (A/H1N1), influenza A H3N2, and influenza B were tested in all patients by RT-PCR. Results The overall hospital mortality rate was 17.6%. A total of 30.4% of patients tested positive for influenza A/H1N1. Patients with SARI that evolved to ARDS took significantly longer to take the first dose of oseltamivir (6.0 vs 1.0 days, p=0.002). Patients with H1N1 positive tests had almost 3 times higher probability of death, despite having significantly less comorbidities (p=0.027). The influenza A/H1N1 pdm09 vaccine reduced the odds of death by 78%. Nonsurvivors had a more intense inflammatory response than did survivors at 48 h (C-reactive protein: 31.0 ± 17.5 vs. 14.6 ± 8.9 mg/dl, p=0.001) as well as a more positive fluid balance. Conclusions Hospital mortality associated with influenza H1N1-associated SARI and ARDS continued to be high years after the 2009 pandemic in a population with low vaccine coverage. Antiviral treatment started more than two days after onset of symptoms was more frequently associated with ARDS and death and, having had vaccine against influenza A (H1N1) was a factor independently related to survival.
- Published
- 2019
- Full Text
- View/download PDF
3. Respiratory syncytial virus evaluation among asymptomatic and symptomatic subjects in a university hospital in Sao Paulo, Brazil, in the period of 2009-2013
- Author
-
Aripuanã Sakurada Aranha Watanabe, Clarice Neves Camargo, Nancy Bellei, Celso Francisco Hernandes Granato, Luciana Peniche Moreira, and Thaís Boim Melchior
- Subjects
Adult ,Male ,0301 basic medicine ,Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,Epidemiology ,Health Personnel ,respiratory syncytial virus ,030106 microbiology ,Respiratory Syncytial Virus Infections ,Nose ,Real-Time Polymerase Chain Reaction ,Asymptomatic ,Virus ,Hospitals, University ,03 medical and health sciences ,0302 clinical medicine ,Risk Factors ,Internal medicine ,medicine ,Humans ,asymptomatic ,030212 general & internal medicine ,Respiratory system ,Child ,Asymptomatic Infections ,Close contact ,Respiratory tract infections ,business.industry ,Transmission (medicine) ,Public Health, Environmental and Occupational Health ,Infant ,Original Articles ,Middle Aged ,Viral Load ,University hospital ,Respiratory Syncytial Viruses ,Surgery ,Infectious Diseases ,Caregivers ,Child, Preschool ,symptomatic ,Female ,Original Article ,medicine.symptom ,business ,Viral load ,Brazil - Abstract
Background The respiratory syncytial virus (RSV) is recognized as an important cause of respiratory tract infections. Immunocompromised patients, healthcare workers (HCWs) and children contacts are at increased risk of acquiring the infection. However, the impact of asymptomatic infection in transmission has not been well studied. Objectives: this study evaluated the frequency and viral load (VL) of RSV in nasal swab samples of individuals with different risk factors for acquiring infection in a university hospital in Sao Paulo, Brazil. Methods We included 196 symptomatic children and their 192 asymptomatic caregivers, 70 symptomatic and 95 asymptomatic HCWs, 43 samples from symptomatic HIV‐positive outpatients, and 100 samples of asymptomatic HIV patients in the period of 2009‐2013. Results RSV infection was detected in 10.1% (70/696) of samples, 4.4% (17/387) of asymptomatic patients, and 17.1% (53/309) from symptomatic patients. (P < .0001). The VL of symptomatic patients (4.7 log copies/mL) was significantly higher compared to asymptomatic patients (2.3 log copies/mL). RSV detection among asymptomatic caregivers (6.8%; 13/192) was significantly higher compared to other asymptomatic adults, HIV and HCWs (2.0%; 4/195; P = .0252). A close contact with an infected child at home was an important risk to RSV acquisition [OR 22.6 (95% CI 4.8‐106.7)]. Children who possibly transmitted the virus to their asymptomatic contacts had significantly higher viral load than children who probably did not transmit (P < .0001). Conclusions According to our results, it is important to know if people circulating inside the hospital have close contact with acute respiratory infected children.
- Published
- 2018
- Full Text
- View/download PDF
4. Rotavirus genotypes as etiological agents of diarrhoea in general populations of two geographic regions of Brazil
- Author
-
Celso Francisco Hernandes Granato, Aripuanã Sakurada Aranha Watanabe, Emerson Carraro, Marcel Leite, and Rita de Cássia Compagnoli Carmona
- Subjects
0301 basic medicine ,Adult ,Diarrhea ,Male ,Rotavirus ,lcsh:Arctic medicine. Tropical medicine ,Adolescent ,Genotype ,lcsh:RC955-962 ,Epidemiology ,030106 microbiology ,Biology ,medicine.disease_cause ,Chromatography, Affinity ,Rotavirus Infections ,03 medical and health sciences ,Young Adult ,medicine ,Humans ,Latex agglutination assay ,Child ,Genotyping ,Phylogeny ,Infant, Newborn ,Infant ,General Medicine ,Middle Aged ,Virology ,030104 developmental biology ,Infectious Diseases ,Child, Preschool ,Geographic regions ,Etiology ,Immunization program ,RNA, Viral ,Original Article ,Female ,Seasons ,Vaccine ,Brazil - Abstract
Rotavirus is the main global cause of severe childhood diarrhoea among children. In 2006, Rotarix® (G1P[8]) was introduced into Brazil’s National Immunization Program. The vaccine coverage rate was 84.4% in 2009. Evidences of increasing G2P[4] after 2006 opened up the discussion about the vaccine effectiveness to non-G1 strains. The aim of this study was to identify the circulating rotavirus genotypes in two Brazilian regions during 2009. A total of 223 positive samples by immunochromatography and latex agglutination assay from the Northeast (Bahia/Pernambuco States) and Southeast (São Paulo/Rio de Janeiro States) regions were included in the study. The samples were submitted to genotyping by nested-PCR according to VP7(G) and VP4(P) and 175 samples (78.5%) were able to be characterized. Considering the characterization of VP7, the G-types detected were G1, G2, and G4 in the Northeast, and G2, G3, G5, and G9 in the Southeast. Considering the characterization of VP4, the P-types detected were P[4], P[8], and P[6]/P[9] in the Northeast and the Southeast. The most frequent mixed types found were G2P[4]/G2P[NT](81.4%), G2P[6](5.2%), G1P[6](5.2%) in the Northeast, and G2P[4]/G2P[NT](78.8%), G2P[6](8.2%), G9P[8](4.7%) in the Southeast. Among immunized individuals whose age ranged from 0-4 years, the G2P[4]/G2P[NT] genotype was identified in 91,0% of cases, and among non-immunized individuals of the same age, the G2P[4]/G2P[NT] genotype was identified in 85.7% of the cases. In accordance with the high level of vaccine coverage, the data suggest that the circulation of G2P[4] in these regions had a considerable increase after the introduction of Rotarix®.
- Published
- 2017
5. Viral immunogenicity determines epidemiological fitness in a cohort of DENV-1 infection in Brazil
- Author
-
Tauyne Menegaldo Pinheiro, Danielle G. Souza, João Pessoa Araújo, Flavio Lemos Matassoli, Laura H. V. G. Gil, Bárbara Aparecida Chaves, Paulo Filemon Paolucci Pimenta, Danila Vedovello, Lana Monteiro Meuren, Mauro M. Teixeira, Carlos Eduardo Calzavara-Silva, Luciana Barros de Arruda, Nikos Vasilakis, Mayara Marques Carneiro da Silva, Betânia Paiva Drumond, Adriana Bozzi, Mânlio Tasso de Oliveira Mota, Joice Matos Biselli-Périco, Aripuanã Sakurada Aranha Watanabe, Milene Rocha Ribeiro, Carolina Lucas, Izabella Cristina Andrade Batista, Michelle Premazzi Papa, Maurício Lacerda Nogueira, Universidade de São Paulo (USP), Universidade Federal de Minas Gerais (UFMG), Universidade Estadual Paulista (Unesp), Fiocruz MS, Univ Estado Amazonas, Fundacao Med Trop Dr Heitor Vieira Dourado FMT HV, Universidade Federal do Rio de Janeiro (UFRJ), Univ Texas Med Branch, and Univ Fed Juiz de Fora
- Subjects
Male ,0301 basic medicine ,Physiology ,T-Lymphocytes ,viruses ,Disease Vectors ,Dengue virus ,medicine.disease_cause ,Biochemistry ,Mosquitoes ,Dengue fever ,Cohort Studies ,Dengue ,White Blood Cells ,Database and Informatics Methods ,Animal Cells ,Aedes ,Immune Physiology ,Genotype ,Medicine and Health Sciences ,Immune Response ,Phylogeny ,Innate Immune System ,B-Lymphocytes ,Immune System Proteins ,T Cells ,lcsh:Public aspects of medicine ,Immunogenicity ,Eukaryota ,virus diseases ,3. Good health ,Insects ,Infectious Diseases ,Cytokines ,Cellular Types ,Sequence Analysis ,Brazil ,Research Article ,Antigenicity ,lcsh:Arctic medicine. Tropical medicine ,Lineage (genetic) ,Arthropoda ,lcsh:RC955-962 ,Bioinformatics ,Immune Cells ,Immunology ,030106 microbiology ,Viremia ,Biology ,Research and Analysis Methods ,Microbiology ,03 medical and health sciences ,Virology ,medicine ,Animals ,Humans ,Antigens ,Blood Cells ,Organisms ,Public Health, Environmental and Occupational Health ,Biology and Life Sciences ,Proteins ,lcsh:RA1-1270 ,Cell Biology ,Molecular Development ,Dengue Virus ,medicine.disease ,Invertebrates ,Viral Replication ,Insect Vectors ,Mice, Inbred C57BL ,Species Interactions ,030104 developmental biology ,Viral replication ,Immune System ,Interferons ,Developmental Biology - Abstract
The dynamics of dengue virus (DENV) circulation depends on serotype, genotype and lineage replacement and turnover. In São José do Rio Preto, Brazil, we observed that the L6 lineage of DENV-1 (genotype V) remained the dominant circulating lineage even after the introduction of the L1 lineage. We investigated viral fitness and immunogenicity of the L1 and L6 lineages and which factors interfered with the dynamics of DENV epidemics. The results showed a more efficient replicative fitness of L1 over L6 in mosquitoes and in human and non-human primate cell lines. Infections by the L6 lineage were associated with reduced antigenicity, weak B and T cell stimulation and weak host immune system interactions, which were associated with higher viremia. Our data, therefore, demonstrate that reduced viral immunogenicity and consequent greater viremia determined the increased epidemiological fitness of DENV-1 L6 lineage in São José do Rio Preto., Author summary Since 2008 L6 is the endemic lineage that has circulated in SJRP. In 2010, the L1 lineage was first identified in the city. For a period, both lineages co-circulated, and then in 2013, L1 began to diminish until it was no longer detected in the population. Differences in replicative fitness are usually the main factor for clade replacement (CR) in DENV epidemics. However, despite the better viral fitness of the emerging lineage, the absence of CR could not be explained by these differences alone. Here, we combine epidemiological, phylogenetic, molecular and immunological analyses to provide a more precise understanding of the role of fitness in lineage dynamics with the persistence of L6 even after the introduction of L1 without CR. Differences in immune responses elicited by DENV-1 L1 and L6 lineages (genotype V), but not viral fitness in mosquito or human cells, explain the dynamics of circulating DENV in a city of Brazil.
- Published
- 2018
- Full Text
- View/download PDF
6. Human adenovirus detection among immunocompetent and immunocompromised patients presenting acute respiratory infection
- Author
-
Clarice Neves Camargo, Diane Puerari, Nancy Bellei, Sandra Baltazar Guatura, Celso Francisco Hernandes Granato, Emerson Carraro, Aripuanã Sakurada Aranha Watanabe, Universidade Federal de São Paulo (UNIFESP), and Universidade do Centro-Oeste Departamento de farmacologia Clínica
- Subjects
Microbiology (medical) ,Adult ,Male ,medicine.medical_specialty ,lcsh:Arctic medicine. Tropical medicine ,Adolescent ,lcsh:RC955-962 ,medicine.medical_treatment ,Fluorescence assay ,HAdV ,Hematopoietic stem cell transplantation ,Polymerase Chain Reaction ,Adenovirus Infections, Human ,Immunocompromised Host ,Young Adult ,Risk groups ,Internal medicine ,Respiratory infection ,medicine ,Prevalence ,Humans ,Immunocompromised patients and immunocompetent patients ,Lower respiratory infection ,Child ,Respiratory Tract Infections ,Aged ,Aged, 80 and over ,business.industry ,Adenoviruses, Human ,Middle Aged ,Virology ,Infectious Diseases ,DFA ,Renal transplant ,Fluorescent Antibody Technique, Direct ,Acute Disease ,Etiology ,Parasitology ,Female ,business ,Nested polymerase chain reaction ,Immunocompetence ,Brazil ,Nested PCR - Abstract
INTRODUCTION: Human adenoviruses (HAdV) play an important role in the etiology of severe acute lower respiratory infection, especially in immunocompromised individuals. The aim of the present study was detect the HAdV through different methods: direct fluorescence assay (DFA) and nested-polymerase chain reaction (PCR-nested) from patients with acute respiratory infection (ARI) up to 7 days of symptoms onset. METHODS: Samples (n=643) were collected from different risk groups during from 2001 to 2010: 139 adults attended in an Emergency Room Patients (ERP); 205 health care workers (HCW); 69 from Renal Transplant Outpatients (RTO); 230 patients in hematopoietic stem cell transplantation (HSCT) program. RESULTS: Among all patients (n=643) adenovirus was detected on 13.2% by DFA and/or PCR: 6/139 (4.3%) adults from ERP, 7/205 (3.4%) from HCW samples, 4/69 (5.8%) from RTO and 68/230 (29.5%) from HSCT patients. Nested PCR showed higher detection (10%) compared to DFA test (3.8%) (p < 0.001). HSCT patients presented significantly higher prevalence of HAdV infection. CONCLUSIONS: Adenovirus detection through nested-PCR assay was higher. However the inclusion of molecular method in laboratorial routine diagnostic should be evaluated considering the reality of each specific health service. Universidade Federal de São Paulo (UNIFESP) Departamento de Medicina Disciplina de Infectologia Universidade do Centro-Oeste Departamento de farmacologia Clínica UNIFESP, Depto. de Medicina Disciplina de Infectologia SciELO
- Published
- 2013
7. Frequência de bocavírus humano em infecções respiratórias entre pacientes de risco na cidade de São Paulo, Brasil
- Author
-
Nancy Bellei, Celso Francisco Hernandes Granato, Élcio Leal, Elaine Regina Baptista Caccia, Aripuanã Sakurada Aranha Watanabe, and Emerson Carraro
- Subjects
Adult ,medicine.medical_specialty ,lcsh:Arctic medicine. Tropical medicine ,Heart disease ,Adolescent ,Hospitalized patients ,lcsh:RC955-962 ,Risk groups ,Polymerase Chain Reaction ,Parvoviridae Infections ,CIENCIAS BIOLOGICAS [CNPQ] ,Young Adult ,Risk Factors ,Internal medicine ,Human bocavirus ,Infecção viral ,Medicine ,Humans ,Respiratory system ,Child ,Respiratory samples ,Respiratory Tract Infections ,Aged ,Aged, 80 and over ,biology ,business.industry ,Infant, Newborn ,Respiratory infection ,Infant ,General Medicine ,Middle Aged ,medicine.disease ,biology.organism_classification ,Grupos de risco ,Infecção respiratória ,Infectious Diseases ,PCR ,Child, Preschool ,DNA, Viral ,Etiology ,Respiratory virus ,Seasons ,business ,Bocavírus humano (HBoV) ,Brazil - Abstract
INTRODUÇÃO E OBJETIVOS: O bocavírus humano (HBoV) tem sido descrito desde 2005 como agente etiológico de infecções respiratórias virais. O presente estudo tem como objetivo investigar a etiologia da infecção respiratória pelo HBoV em pacientes adultos e crianças de diferentes grupos de risco para complicação de infecções respiratórias agudas desde 2001 até 2008 em um hospital terciário no Brasil. PACIENTES E MÉTODOS: O HBoV foi investigado, através de reação em cadeia da polimerase, em 598 amostras respiratórias coletadas de pacientes hospitalizados e não hospitalizados. RESULTADOS: Das 598 amostras testadas o HBoV foi detectado em 2,44% (8/328) das crianças, incluindo cinco crianças portadoras de cardiopatia congênita, e 0,4% (1/270) dos adultos em programa de transplante de células tronco hematopoiéticas. CONCLUSÃO: Os dados do presente estudo sugerem baixa freqüência de detecção do HBoV entre pacientes de risco, e destaca a necessidade de novos estudos para um melhor entendimento do verdadeiro papel desse agente em infecções respiratórias agudas em pacientes sintomáticos. BACKGROUND AND OBJECTIVES: Human Bocavirus (HBoV) has been described since 2005 as an etiological agent of respiratory virus infections. From 2001 to 2008 we investigated the etiology of HBoV among adults and children in different groups at risk of presenting complications arising from acute respiratory infection, the investigation was carried out in a tertiary hospital health care system in Brazil. METHODS: HBoV DNA was assayed in 598 respiratory samples from community and hospitalized patients by PCR. RESULTS: Of the 598 tested samples, 2.44% (8/328) of children, including five children with heart disease, and 0.4% (1/270) of adult bone-marrow-transplant were HBoV positive. CONCLUSIONS: These data suggested lower HBoV frequency among different at-risk patients and highlights the need to better understand the real role of HBoV among acute respiratory symptomatic patients. LEAL, E. S. Pós-Dr. Docente da Universidade Federal do Pará, Instituto de Ciências Biológicas, Faculdade de Biotecnologia
- Published
- 2012
8. Surveillance of influenza A H1N1 2009 among school children during 2009 and 2010 in São Paulo, Brazil
- Author
-
Sandra Baltazar Guatura, Emerson Carraro, Sheila Negrini Parmezan, Aripuanã Sakurada Aranha Watanabe, Tatiane Karen Cabeça Tomazella, Celso Francisco Hernandes Granato, Nancy Bellei, Janete Kamikawa, Ana Maria Passos, and Clarice Neves Camargo
- Subjects
Microbiology (medical) ,Male ,Pediatrics ,medicine.medical_specialty ,lcsh:Arctic medicine. Tropical medicine ,lcsh:RC955-962 ,Attack rate ,Day care ,Real-Time Polymerase Chain Reaction ,Influenza H1N1 ,Subtipagem ,PCR-RFLP ,Subtyping ,Influenza A Virus, H1N1 Subtype ,Pandemic ,Influenza, Human ,medicine ,Humans ,Child ,Pandemics ,Respiratory Tract Infections ,Schools ,Surveillance ,business.industry ,Incidence (epidemiology) ,Mortality rate ,Outbreak ,Infant ,Vaccination ,Vigilância ,Infectious Diseases ,Logistic Models ,Child, Preschool ,Etiology ,Parasitology ,Female ,business ,Sentinel Surveillance ,Brazil - Abstract
INTRODUCTION: Influenza A H1N1 2009 is associated with a high morbidity rate among children around the world, including Brazil. This survey was conducted on samples of symptomatic children (< 12 years) to investigate the influenza virus as the etiological agent of respiratory infections in a day care school in a health facility during the first and second pandemic wave of H1N1 (2009-2010) in São Paulo, Brazil. METHODS: Influenza infections were determined by real-time PCR in 34% (47/137) of children with a median age of 5 years (8 months - 12 years), from June to October 2009 and in 16% (14/85) of those with median age of 6 years (1-12 years), from March to November 2010. RESULTS: In general, most positive cases (64%) occurred in children aged 5-12 years, this age group was significantly the most affected (39.8%, p = 0.001, OR = 8.3, CI 95% 1.9-36.9). Wheezing was reported by 31% (19/61) and dyspnea by 23% (14/61) of the studied patients. An outbreak of influenza H1N1 with an attack rate of 35.7% among children (median age 6 years) was documented in April 2010, before the vaccination campaign against the pandemic virus was extended for children up to 5 years in Brazil. CONCLUSIONS: Therefore, the study reinforces the recommendation to immunize school children to reduce the incidence of the disease. INTRODUÇÃO: Influenza A H1N1 2009 está associado com uma alta taxa de morbidade entre crianças ao redor do mundo, incluindo o Brasil. Esta pesquisa foi realizada em amostras de crianças sintomáticas (< 12 anos) em uma creche escola para filhos de funcionários do hospital durante a primeira e segunda onda pandêmica (2009-2010) em São Paulo, Brasil. MÉTODOS: Infecções pelo vírus influenza foram determinadas por PCR em tempo real em 34% (47/137) em crianças com idade mediana de 5 anos (8 meses -12 anos), entre junho e outubro de 2009 e em 16% (14/85) daquelas com mediana de idade de 6 anos (1-12 anos), de março a novembro de 2010. RESULTADOS: Em geral, a maioria dos casos positivos (64%) ocorreu em crianças com idade entre 5-12 anos, esta faixa etária foi significativamente a mais afetada (39,8%, p = 0,001, OR = 8,3, CI 95%: 1,9-36,9). Chiado foi relatado em 31% (19/61) e dispnéia em 23% (14/61) dos pacientes estudados. Um surto de gripe H1N1 com uma taxa de ataque de 35,7% entre as crianças (mediana de idade de 6 anos) foi documentado em abril de 2010, antes da extensão da campanha de vacinação contra o vírus pandêmico para crianças até 5 anos no Brasil. CONCLUSÕES: Portanto, neste estudo reforça a recomendação para imunizar crianças em idade escolar para reduzir a incidência da doença.
- Published
- 2012
9. Frequency of human rhinovirus species in outpatient children with acute respiratory infections at primary care level in Brazil
- Author
-
Nancy Bellei, Emerson Carraro, Élcio Leal, Luciana Peniche Moreira, Celso Francisco Hernandes Granato, Eurico Arruda, Aripuanã Sakurada Aranha Watanabe, and Janete Kamikawa
- Subjects
Microbiology (medical) ,Pediatrics ,medicine.medical_specialty ,Rhinovirus ,Primary care ,medicine.disease_cause ,law.invention ,stomatognathic system ,law ,parasitic diseases ,Outpatients ,otorhinolaryngologic diseases ,Prevalence ,Medicine ,Humans ,Respiratory system ,Child ,Respiratory Tract Infections ,Polymerase chain reaction ,Picornaviridae Infections ,Primary Health Care ,business.industry ,virus diseases ,Infant ,Reverse transcriptase ,Infectious Diseases ,El Niño ,Molecular Diagnostic Techniques ,Child, Preschool ,Pediatrics, Perinatology and Child Health ,Amplicon sequencing ,RNA, Viral ,business ,Brazil ,circulatory and respiratory physiology - Abstract
This study assessed the occurrence of human rhinovirus (HRV) species in outpatient children attending day-care in Sao Paulo, Brazil. HRV reverse transcriptase polymerase chain reaction and amplicon sequencing were done in 120 samples collected in 2008. HRV was detected in 27.5% of samples. HRV C was detected in 60.7% of wheezers, a frequency not different from that observed in nonwheezers (69.6%).
- Published
- 2011
10. Influenza detection and subtyping by reverse transcriptase polymerase chain reaction-restriction fragment length polymorphism for laboratory surveillance in Brazil
- Author
-
Celso Francisco Hernandes Granato, Aripuanã Sakurada Aranha Watanabe, Daniel Ferreira Lima Neto, Nancy Bellei, and Emerson Carraro
- Subjects
Microbiology (medical) ,viruses ,Orthomyxoviridae ,medicine.disease_cause ,law.invention ,Influenza A Virus, H1N1 Subtype ,law ,Genotype ,Influenza, Human ,Influenza A virus ,medicine ,Humans ,Polymerase chain reaction ,Polymerase ,biology ,Reverse Transcriptase Polymerase Chain Reaction ,Influenza A Virus, H3N2 Subtype ,virus diseases ,General Medicine ,biology.organism_classification ,Virology ,Molecular biology ,Subtyping ,Reverse transcriptase ,Infectious Diseases ,biology.protein ,Restriction fragment length polymorphism ,Brazil ,Polymorphism, Restriction Fragment Length - Abstract
A duplex reverse transcriptase polymerase chain reaction-restriction fragment length polymorphism for influenza virus subtyping was applied to 412 patient samples. The assay was able to discriminate all 47 influenza A H1N1 and H3N2 viruses. This rapid technique assessed if positive samples were current circulating strains or an emergent one and could be used as the 1st test in prepandemic stages.
- Published
- 2007
11. Etiologia viral de infec?o respirat?ia aguda entre idosos, durante a temporada de gripe
- Author
-
Aripuanã Sakurada Aranha Watanabe, Nancy Bellei, Maria Rita Donalisio, Élcio Leal, Emerson Carraro, Celso Francisco Hernandes Granato, João Manuelo Grisi Candeias, Universidade Federal de São Paulo (UNIFESP), Universidade Estadual Paulista (Unesp), Universidade Estadual de Campinas (UNICAMP), Fed Univ Para, São Paulo Federal University, Universidade Estadual Paulista (UNESP), and Universidade Federal do Pará (UFPA)
- Subjects
Male ,Rinovírus humano ,Rhinovirus ,Reação em cadeia da polimerase ,medicine.disease_cause ,Human rhinovirus ,Group B ,Idosos ,Elderly ,Genescan RT-PCR ,Medicine ,Prospective Studies ,Respiratory system ,Respiratory Tract Infections ,Phylogeny ,Aged, 80 and over ,education.field_of_study ,Respiratory tract infections ,Reverse Transcriptase Polymerase Chain Reaction ,Incidence ,Respiratory infection ,virus diseases ,Middle Aged ,Orthomyxoviridae ,Respiratory Syncytial Viruses ,Infectious Diseases ,Acute Disease ,Reverse transcription polymerase chain reaction ,Female ,Seasons ,Brazil ,Microbiology (medical) ,Infecções respiratórias ,medicine.medical_specialty ,lcsh:Arctic medicine. Tropical medicine ,lcsh:RC955-962 ,Population ,Virus ,stomatognathic system ,Internal medicine ,Humans ,education ,Aged ,Respiratory viruses ,business.industry ,Influenza A/B ,Viroses respiratórias ,Immunology ,Etiology ,CIENCIAS BIOLOGICAS::MICROBIOLOGIA::BIOLOGIA E FISIOLOGIA DOS MICROORGANISMOS::VIROLOGIA [CNPQ] ,Parasitology ,Metapneumovirus ,business - Abstract
Made available in DSpace on 2013-08-12T18:58:19Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-01-01 Made available in DSpace on 2013-09-30T18:38:25Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-01-01 Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-20T13:51:06Z No. of bitstreams: 0 Made available in DSpace on 2014-05-20T13:51:06Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-01-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Introdução: Infecções agudas do trato respiratório estão entre as doenças mais comuns em todas as pessoas. Os rinovírus têm sido descritos como agente etiológico de mais de 50% das infecções do trato respiratório ao redor do mundo. O objetivo deste trabalho foi avaliar a ocorrência de rinovírus humano (HRV), influenza vírus A e B, vírus respiratório sincicial humano e metapneumovírus (hMPV) em uma população de idosos que apresentava sintomas de gripe ou resfriado, e que residiam na Cidade de Botucatu, Estado de São Paulo, Brasil. Métodos: Foram coletados swabs nasais de 47 idosos após visitas de inclusão, entre os anos de 2002 e 2003 e que foram testadas através de GeneScan RT-PCR. Resultados: HRV foi detectado em 28.6% (14/47) e hMPV em 2% (1/47). De 14 amostras positivas para HRV, 9 foram sequenciadas, mostrando a seguinte distribuição de grupos: grupo A: 6 amostras, grupo B: 1 amostra e grupo C: 2 amostras. Conclusões: A alta incidência de HRV durante os meses de ocorrência de gripe necessita de estudos posteriores para avaliar o impacto desse vírus entre os idosos. A alta frequência de HRV pode contribuir para o aumento da demanda por serviços de saúde durante a estação de influenza. Introduction: Acute respiratory tract infections are the most common illness in all individuals. Rhinoviruses have been reported as the etiology of more than 50% of respiratory tract infections worldwide. The study prospectively evaluated 47 elderly individuals from a group of 384 randomly assigned for acute respiratory viral infections (cold or flu) and assessed the occurrence of human rhinovirus (HRV), influenza A and B, respiratory syncytial virus and metapneumovirus (hMPV) in Botucatu, State of São Paulo, Brazil. Methods: Forty-nine nasal swabs collected from 47 elderly individuals following inclusion visits from 2002 to 2003 were tested by GenScan RT-PCR. HRV-positive samples were sequenced for phylogenetic analysis. Results: No sample was positive for influenza A/B or RSV. HRV was detected in 28.6% (14/47) and hMPV in 2% (1/47). of 14 positive samples, 9 isolates were successfully sequenced, showing the follow group distribution: 6 group A, 1 group B and 2 group C HRVs. Conclusions: The high incidence of HRV during the months of the influenza season requires further study regarding HRV infection impact on respiratory complications among this population. Infection caused by HRV is very frequent and may contribute to increasing the already high demand for healthcare during the influenza season. Univ Fed São Paulo, Dept Med, Infect Dis Unit, Clin Virol Lab, São Paulo, Brazil São Paulo State Univ, Biosci Inst, Human & Anim Virol Lab, Botucatu, SP, Brazil Univ Estadual Campinas, Med Sci Coll, Campinas, SP, Brazil Fed Univ Para, Inst Biotechnol, BR-66059 Belem, Para, Brazil São Paulo State Univ, Biosci Inst, Human & Anim Virol Lab, Botucatu, SP, Brazil
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.