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Introduction: Urinary tract infection (UTI) is among the common bacterial infections in pediatric patients. These infections are more common in girls over one year old. This study aimed to investigate the bacterial distribution and drug resistance status in urine cultures of pediatric patients in our center. Materials and Methods: Urine culture results of patients who were presented to the outpatient clinics or were admitted to the Sivas Cumhuriyet University hospital between January 2017 and December 2022 were included in the study. The hospital automation system, patient files, and laboratory information management system were examined retrospectively. Statistical analysis was performed using the SPSS 22.0 software. A P-value of <0.05 was deemed significant. Results: Significant growth was observed in the urine cultures of a total of 1287 pediatric patients, 889 (69.1%) girls and 398 boys (30.9%). The patients included in the study were between the ages of 0-17, and children aged 1-6 (37.6%) were diagnosed with UTI more frequently than other ages. The most common UTI agent in the pediatric age group was Escherichia coli (56.6%). The first agent isolated in girls and boys is E.coli. Additionally, the prevalence of K. pneumoniae, P. mirabilis and K. oxytoca bacteria was higher in boys (p < 0.05). E. coli isolates showed minimal resistance to such as amikacin (0.6%), fosfomycin (1.0%), nitrofurantoin (1.4%), ertapenem (2.4%), imipenem (0.7%) and meropenem (0.9%). Conclusion: In this study, low resistance levels were detected for amikacin, fosfomycin, nitrofurantoin and carbapenem group antibiotics, which are important alternatives in the empirical treatment of UTI. On the other hand, due to the high resistance levels detected, it is thought that more caution should be exercised in the empirical use of amoxicillin-clavulanate, trimethoprimsulfamethoxazole and cefixime. If these antibiotics are to be preferred, waiting for the antibiogram results is an appropriate approach. [ABSTRACT FROM AUTHOR]

Objective: This study aimed to identify subspecies of Mycobacterium abscessus complex (MABC) isolates from clinical samples by a molecular technique and to determine mutations responsible for macrolide and aminoglycoside resistance. We also aimed to investigate the correlation of phenotypic and molecular test results by examining the resistance to antimicrobial agents according to CLSI standard using the liquid microdilution test. Methods: 27 MABC isolates from clinical samples were examined. Molecular subspecies identification and mutations responsible for aminoglycoside (rrs mutation) and macrolide resistance (rrl mutation) were determined using the GenoType NTM-DR test. The resistance phenotypes of the strains to various antimicrobial agents were investigated by the Sensititre™ RAPMYCOI AST microdilution test. Results: Of the 27 isolates tested, 21 were M. abscessus subsp. abscessus, three were M. abscessus subsp. bolletii, and three were M. abscessus subsp. massiliense; rrs and rrl mutations were not observed in any strains. Except for one isolate, all M. abscessus subsp. abscessus strains showed the erm(41) T28 genotype, which indicates inducible macrolide resistance. The correlation between the GenoType NTM-DR and phenotypic susceptibility test results was 81% (k=0.5, p=0.02) for inducible macrolide resistance and 89% for acquired macrolide resistance. The most effective antimicrobial agents were amikacin, cefoxitin, imipenem, linezolid, and tigecycline. Conclusion: Although the GenoType NTM-DR test is reliable in identifying and detecting molecular macrolide and aminoglycoside resistance, there were discrepancies in the results. We recommend confirming the results with the phenotypic susceptibility method after growth on culture. Although the M. abscessus complex is resistant to many antimicrobial agents, it has shown high sensitivity to amikacin, cefoxitin, imipenem, linezolid, and tigecycline. High levels of inducible macrolide resistance in isolates indicate the importance of subtyping and sensitivity testing of isolates in patients where culture conversion has not been achieved. [ABSTRACT FROM AUTHOR]

Sonuç: Amerikan Enfeksiyon Hastalıkları Derneği [Infectious Diseases Society of America (IDSA)] rehberinde ÜSE tedavisinde ilk seçenek olarak trimetoprim/sulfametoksazol, alternatif olarak da kinolonlar tavsiye edilmektedir. Ayrıca uluslararası tedavi rehberleri, komplikasyonsuz alt ÜSE'lerin ampirik tedavisinde direnç oranları %20'den yüksek antimikrobiyallerin kullanımını önermemektedir. Çalışmamızda; levofloksasin, siprofloksasin ve norfloksasin direnç oranları birbirine yakın olup ampirik tedavi için uygun görünmektedir, ancak trimetoprim/sulfametoksazol direnç oranı yüksek göörülmüştür (%36,3). Toplum kökenli hasta idrar örneklerinden beş yıllık sürede izole edilen E. coli izolatlarında saptadığımız %26,1'lik GSBL (genişlemiş spektrumlu ß-laktamaz) oranıyla birlikte, direnç oranları yüksek ampisilin, amoksisilin, amoksisilin/klavulanat, trimetoprim/sulfametoksazol ve sefalosporinlerin ampirik tedavi için uygun olmadığını düşünmekteyiz. Çalışmamızdaki sonuçlara dayanarak fosfomisinin tek doz oral kullanım avantajı, yüksek hasta uyumu ve düşük yan etki profili ile ayaktan hastalarda ampirik tedavi için ilk seçilecek ilaç olduğunu ve özellikle nonkomplike ÜSE'lerin ampirik tedavisinde nitrofurantoinin alternatif olduğunu düşünmekteyiz. Objective: Escherichia coli (E. coli) is the most common pathogen of bacterial infections worldwide and is responsible for 80% of urinary tract infections (UTIs). In recent years, resistance to antimicrobials used in the treatment of infections caused by E. coli has been increasing all over the world, and it is necessary to constantly monitor resistance rates and update empirical treatment recommendations in order to prevent treatment failure and increase in treatment costs. Methods: In this study, antimicrobial resistance rates of E. coli strains grown in urine culture samples sent from all polyclinics to Malatya Training and Research Hospital Microbiology laboratory between 2015-2019 were retrospectively investigated. Conventional methods and Vitek 2 Compact automated system (BioMérieux, France) were used for the identification of bacteria in plaques with significant growth and for antimicrobial susceptibility testing (AST). AST results were determined as sensitive and resistant according to the European Committee on Antimicrobial Susceptibility Testing (EUCAST) guidelines. Results: It was detected significant growth in 14.8% (22636/153006) of urine cultures of outpatients over a five-year period, and identification and ASTs were studied. E. coli constituted 68.3% (15475/22636) of the identified factors. The antimicrobial drugs with the highest resistance rates were ampicillin (65.2%), amoxicillin/clavulanate (38.5%), trimethoprim/sulfamethoxazole (36.3%), cephalexin (35%) and cefuroxime (31.3%) respectively. The least resistance rates were found against carbapenems (0.6-2.1%), fosfomycin (3.6%), nitrofurantoin (5.8%) and amikacin (7.5%), respectively. Quinolone resistance rates were found to be 16.7% for levofloxacin, 19.1% for ciprofloxacin and 21.9% for norfloxacin. Conclusion: In the guideline of the Infectious Diseases Society of America (IDSA), trimethoprim/sulfamethoxazole is recommended as the first choice in the treatment of UTI, and quinolones are recommended as an alternative. In addition, international treatment guidelines do not recommend the use of antimicrobials with resistance rates higher than 20% in the empirical treatment of uncomplicated lower UTIs. In our study, the resistance rates of levofloxacin, ciprofloxacin and norfloxacin were close to each other and seemed appropriate for empirical treatment, but the rate of trimethoprim/sulfamethoxazole resistance was high (36.3%). It is thought think that ampicillin, amoxicillin, amoxicillin/clavulanate, trimethoprim/sulfamethoxazole and cephalosporins with high resistance rates are not suitable for empirical treatment, with an ESBL (extended spectrum ß-lactamase) rate of 26.1% in E. coli isolates isolated from community-acquired patient urine samples over a five-year period. Based on the results of our study, it is thought that fosfomycin is the first drug of choice for empirical treatment in outpatients with its advantage of single-dose oral use, high patient compliance and low side-effect profile, and nitrofurantoin is an alternative especially in the empirical treatment of non-complicated UTIs. [ABSTRACT FROM AUTHOR]

Objective: In this study, it was aimed to investigate the change of antibiotic susceptibility of Acinetobacter baumannii strains over the years and to help develop antibiotic use policy by determining the multiple antibiotic resistance rate. Methods: Acinetobacter species isolated from various clinical samples sent to Necip FazılCity Hospital Microbiology Laboratory between January 2013 and December 2018 were included. Vitek 2 Compact (bioMérieux-SE, France) automated systems were used for the identification and antibiotic susceptibility of the isolates. Results: Acinetobacter isolates were isolated at the most from tracheal aspirate samples (n=73; 35%) and samples sent from Anesthesia and Reanimation intensive care unit(n=160; 68%). The distribution of antibiotic sensitivity percentages (%) was given as yearly, three-year averages for 2013-2015, 2016-2018, and the total average for 2013-2018. In the study period, the highest sensitivity was determined to colistin at 97% and the lowest to ceftriaxone at 5%. When the antibiotic sensitivity rates of A. baumannii are evaluated roughly; In the period of 2016-2018, compared to 2013-2015, there was a decrease in sensitivity to amikacin, ampicillin-sulbactam, cefepime, ceftriaxone, colistin and tigecycline, while sensitivity to other antibiotics was observed. Multiple antibiotic resistance was examined in a total of 237 A. baumannii isolated. Multidrug resistant (MDR) resistance was 92%, Extensively Drug Resistant (XDR) resistance was 84% and Pan Drug Resistant(PDR) resistance was 3%. Conclusion: It is observed that resistance against some antibiotics has increased in A. baumannii over the years, and resistance to some antibiotics has decreased. It seems that our XDR resistance rate is very high. Our PDR resistance rate is higher than that of America, but lower than many European countries. In the other hand our result is lower than the average of Turkey. [ABSTRACT FROM AUTHOR]

Objective: Our objective was to investigate the antimicrobial susceptibilities of Escherichia coli isolated from urinary cultures in Central Laboratory of Hacettepe University Faculty of Medicine Hospital and to examine the differences between antimicrobial susceptibilities of E. coli isolated from different patient groups. Methods: E. coli isolated from urinary cultures between January 1, 2017 and April 30, 2018 were included in our study. Automated systems, i.e. VITEK® 2 Compact (bioMérieux, Marcy l'Etoile, France) and BD Phoenix (Becton Dickinson, Sparks, MD, USA) and disk diffusion test were used for the determination of antimicrobial susceptibilities. The patients from whom the bacteria were isolated were divided into groups according to age (<18 years, 18-64 years, and >64 years), gender and patient care (outpatients/inpatients). Results: The highest susceptibility rates were observed for carbapenems (>99%), fosfomycin (98.5%), nitrofurantoin (98.3%) and amikacin (94.2%), whereas the highest resistance rates were observed for ampicillin (61.3%) and amoxicillin--clavulanate (37.5-45.7%). Antimicrobial resistance rates of isolates from patients aged 65 years and over were higher than those of patients in other age groups, with the exception of piperacillintazobactam, amikacin and ertapenem. The resistance rates of isolates belonging to male patients were higher than those belonging to female patients for all antimicrobials. Also, the resistance rates of isolates belonging to inpatients were higher than those belonging to outpatients for all antimicrobials. When the rates of extended-spectrum-lactamase (ESBL)-producing E. coli from different age groups were compared, the highest rate (34.2%) was observed among the isolates from patients aged 65 years and over. The rates of ESBL-producing E. coli from males (33.9%) and inpatients (36.3%) were higher than those from females (23.8%) and outpatients (23.3%), respectively. Conclusions: Antimicrobial susceptibilities of E. coli isolates may vary among different patient groups. Demographic features of patients may guide for selecting the antimicrobials for empiric treatment of urinary tract infections. [ABSTRACT FROM AUTHOR]

Objective: Production of extended-spectrum β-lactamases (ESBLs) is the most important antimicrobial resistance mechanism among Gram-negative pathogens. In this study, ESBL frequency and antimicrobial resistance of Escherichia coli and Klebsiella spp. isolated from community-acquired urinary tract infections (UTIs) are investigated. Methods: In this retrospective cross-sectional study, ESBL rates and the results of antimicrobial susceptibility tests were determined for E. coli and Klebsiella spp. grown in the urine cultures of 520 patients with community-acquired UTI, and the changes in the antimicrobial resistance rates of the isolates were compared in terms of ESBL production. Results: E. coli had grown in 220 samples and Klebsiella spp. in 38 samples. ESBL production frequencies of the isolates were found as 40% and 47.4%, respectively, and the rate of carbapenem resistance was found as 3.1%. Among the isolates, the highest resistance was found for amoxicillin-clavulanate (46%), ciprofloxacin (44.9%), and ceftriaxone (42.2%), while the lowest resistance was found for colistin (0.3%), fosfomycin (1.5%), amikacin (3.1%), and nitrofurantoin (4.2%). In ESBL-producers, significantly higher resistance was found for all antibiotics studied, except colistin, nitrofurantoin and fosfomycin. Conclusions: In this study, it was shown that almost half of the community-acquired isolates were ESBL-producers, and these isolates had acquired resistance against many antimicrobials including the last resorts such as carbapenems and colistin. To reduce the progress of resistance rates in E. coli and Klebsiella spp. which are the most common pathogens in community-acquired UTIs, their therapies should be planned according to the results of susceptibility tests as much as possible. [ABSTRACT FROM AUTHOR]

Objective: Pseudomonas aeruginosa is an opportunistic pathogen that can cause serious infections, especially in health care settings where host defense is impaired. In addition to resistance problem, the different virulence characteristics of these bacteria can change the course of infection and cure. In this study, it was aimed to determine antibiotic susceptibilities, epidemiological relations and virulence factors of clinical P. aeruginosa isolates. Methods: This study was performed, a total of 83 P. aeruginosa isolated from different clinical samples of Ege University Faculty of Medicine Hospital. Antibiotic susceptibilities of isolates were investigated by the VITEK 2 Compact® automated system and epidemiological relations of isolates determined via "Enterobacterial Repetitive Intergenic Consensus- Polymerase Chain Reaction (ERIC-PCR)". Phenotypic tests were performed to determine the virulence factors of the selected representatives from each clone. While the "Elastin Congo Red" method was used for the investigation of elastase activity, appropriate methods applied for Protease, DNase, Lipase, Siderophore and Twitching activities to the detect virulence properties phenotypically. The biofilm production of isolates was investigated by crystal violet method, and the quorum sensing (QS) genes thought to be related to biofilm were determined by PCR method. Results: According to results of antibiotic susceptibility test, the highest resistance was observed against imipenem (43,4%) and the lowest resistance was observed against amikacin (14,5%). Isolates were found in 19 unrelated clones according to ERIC-PZR results. Siderophore and elastase production were observed in all of the representative isolates. Protease, lipase and twitching motility were determined at 5, 14 and 15 isolates respectively, no DNAse production was detected. Nine of the 19 representative isolates produced strong biofilms, and the lasI, lasR, rhlR genes were identified in 17, 18, 13 isolates respectively and the rhlI gene was found in all strains. Conclusion: When the data were evaluated, different antibiotic resistant P. aeruginosa isolates which have different resistance profiles were detected at Ege University Faculty of Medicine Hospital. The inclusion of these resistant isolates in epidemiologically unrelated clones suggests that isolates with genotypically different properties are circulating in the clinics. Despite the many virulence factors that can contribute to pathogenesis, it is noteworthy that biofilm production is particularly prevalent in these isolates. This situation has meant that treatment becomes more difficult, as well as being able to colonize on many different surfaces in health care facilities. More extensive studies in both our country and our region could show the resistance profile of P. aeruginosa bacteria and the effects of virulence factors on the severity of infection. [ABSTRACT FROM AUTHOR]

Objective: The objective of the study was to investigate the three-year antibiotic susceptibility of Pseudomonas aeruginosa and Acinetobacter baumannii strains isolated from intensive care unit (ICU) specimens and to evaluate the changes in resistance rates. Materials and Methods: The resistance profiles of Pseudomonas aeruginosa and Acinetobacter baumannii strains isolated from ICU specimens between January 2015-2018 were analyzed retrospectively and the annual resistance rates were evaluated. Results: Acinetobacter baumannii was isolated in 609 and Pseudomonas aeruginosa was isolated in 420 of the ICU specimens over a three-year period. Strains were most frequently isolated from general ICU. The three-year mean resistance of Acinetobacter baumannii and Pseudomonas aeruginosa to colistin, amikacin, gentamycin, imipenem, meropenem, ciprofloxacin, ceftazidime, piperacillin / tazobactam was 0.5%, 79%, 86%, 96%, 96%, 97% 98%, 99% and 5%, 21%, 25%, 35%, 38%, 40%, 42%, 45%, 49% and 53%, respectively. The most effective antibiotics were for Acinetobacter baumannii and Pseudomonas aeruginosa were colistin (99.5% vs 95%) and amikacin (21% vs 79%), respectively. Conclusion: It was found that Acinetobacter baumannii strains isolated from ICUs were resistant to many antibiotics and that Pseudomonas aeruginosa isolates were more susceptible. These data are proof that new antibiotics are needed in the treatment of infections caused by Acinetobacter baumannii. It would be appropriate for each hospital to monitor changes in their resistance rates and to update the empirical treatment principles. [ABSTRACT FROM AUTHOR]

Objective: Resistant gram-negative bacterial infections that cause hospital-acquired infections are becoming increasingly problematic. Due to the carbapenem resistance that develops in these bacteria, treatment options are restricted, the duration of hospitalization is longer and the mortality increases. This requires the addition of options such as tigecycline and colistin to treatment. The aim of this study is to determine the susceptibility of gram-negative bacteria isolated from various clinical specimens in a private hospital and to determine the appropriate antibiotics in patients. Methods: In our study, 1109 bacterial strains which were produced in various clinical samples were examined in Private Kadıköy Florence Nightingale Hospital between February 2018 and February 2019. Bacteria in the samples are defined in accordance with the recommendations of the manufacturer of the conventional methods, Vitec 2 (Biomeriux, France) automated system. Sensitivity tests were performed by Vitec 2 (Biomeriux, France) automated system and interpreted according to EUCAST criteria. The data were retrospectively evaluated. Results: The most common samples of the study were blood and urine. The most effective antibiotics for Escherichia coli (50.9%), based on the type and sensibility of the identified bacterides, were meropenem (99.6%), imipenem (99.2%), fosfomycin (98.5%), amikacin (96.7%), colistin (98.3%), tigecycline (96.7%). Klebsiella spp. the most effective antibiotics were amikacin (95.2%) and meropenem (92.6%), imipenem (92%), colistin (95.8%) and tigecycline (96.7%). The most effective antibiotics for Proteus spp. were meropenem (95.7%), piperacillin/tazobactam (95.7%) and phosphomycin (91.2%). The sensitivity of tigecycline was found to be 15.4%. The most effective antibiotics for Enterobacter spp. were imipenem (100%), amikacin (100%) and ciprofloxacin (93.1%). The most effective antibiotics for Pseudomonas aeruginosa were amikacin (80.3%), ciprofloxacin (77.4%), colistin (94.7%) was determined. Conclusion: Each center is supposed to know the distribution of gram-negative bacteria, resistance patterns and changes in years, isolated from their own clinical samples. In order to prevent hospital infections and antibiotics, there must be an antibiotic management plan under the responsibility of the infection control committee that is applied by the hospital. [ABSTRACT FROM AUTHOR]

Objective: Recommended combination for the treatment of serious Stenotrophomonas maltophilia infections is ticarcillinclavulanate and co-trimoxazole (SXT). However, first agent is not available in our country, and the second component may be a matter of antimicrobial resistance or intolerance. Therefore, we aimed to evaluate antimicrobial susceptibility testing results of S. maltophilia and in vitro activity of ceftazidime and moxifloxacin as a potential therapeutic alternative. Methods: S. maltophilia strains isolated from clinical samples in Infectious Diseases and Clinical Microbiology Laboratory between 1 October 2007-23 November 2017 were included in the study. Disk diffusion antimicrobial susceptibility test results of the strains were evaluated retrospectively. The in vitro activity of combination of ceftazidime and moxifloxacin against 24 of these strains was investigated by Etest®. Results: During the study period, 649 S. maltophilia strains were isolated from 649 different patients, and 94%, 93%, 92%, 81%, 60%, 55%, 45%, 41%, 38% of the strains were susceptible to tigecycline, moxifloxacin, SXT, ciprofloxacin, cefoperazonesulbactam, ceftazidime, netilmicin, gentamicin and amikacin, respectively. For the 24 strains included in the combination study, the moxifloxacin minimal inhibitory concentration (MIC)50/MIC90 values were defined as 0.064/0.125 µg/mL (MIC range 0.023-4 µg/mL) and ceftazidime MIC50/MIC90 values were defined as 32/256 µg/mL (MIC range 1.5-256 µg/mL). According to the results of fractional inhibitor concentration (FIC) index; ceftazidime and moxifloxacin combination displayed synergism, additivity and indifference for 1 (4%), 18 (75%) and 5 (21%) strains, respectively and there was no antagonism. The FIC50/ FIC90 value is calculated as 0.75/1.01 (FIC range 0.5-1.01). Conclusions: SXT resistance in S. maltophilia strains is below 10%, but it should be closely monitored because of the limited treatment options. Tigecycline and moxifloxacin can be among the treatment alternatives because of their high sensitivity rates similar to SXT. The combination of moxifloxacin plus ceftazidime demonstrated in vitro synergism or additivity against majority of the strains. So, this combination may be used as an alternative for the treatment of patients with S. maltophilia infections if there is resistance or side effects to the antibiotics used as the first option. [ABSTRACT FROM AUTHOR]

Background: The developments in neonatal intensive care units (NICUs) have led to an increase in the survival rate of newborns. However, there is also an increase in nosocomial infections (NE). In this study, we aimed to investigate the predisposing factors in the neonatal sepsis due to Klebsiella strains in the NICU, clinical and laboratory features, mortality rates and antibiotic resistance of these cases. Material and Methods: The patients hospitalized in the neonatal intensive care unit were within 2015-2017 years. They were proven sepsis cases due to Klebsiella pneumoniae and retrospectively analyzed. Demographic, laboratory and clinical features and microbiological results of the patients were recorded. Results: Of the 59 blood culture samples with K. pneumoniae sepsis, 55 (93.2%) had late-onset neonatal sepsis (LNS) and 4 (6.8%) had early-onset neonatal sepsis (ENS). 47 (79.7%) of the cases were preterm. The primary diagnoses of the patients were preterm and respiratory distress syndrome (n: 47, 79.7%), common pathologies include preterm + necrotizing enterocolitis (n: 9, 15.3%), intracranial hemorrhage + hydrocephalus (n: 5, 8.5%), onfalocele or gastroschisis (n: 7, 11.9%), intesttinal atresia (n: 4, 6.8%), severe congenital heart disease (n: 1, 1.7%). More than two invasive procedures were performed in 53 (89.8%) cases before bacteremia developed. The most effective antibiotics against K. pneumoniae strains were colistin (87.3%), meropenem (51.7%) and ciprofloxacin (49.1%). The mortality rate of K. pneumoniae infection was found to be 30%. Resistance rates were 86% against piperacillin, 85% against ceftazidime, 91% against ceftriaxone and 95% against cefaperozone. The percentages of Klebsiella strains resistant to gentamycin, were 67.8% and 68% to both amikacin and trimethoprim-sulfamethoxazole. Conclusion: Klebsiella infections associated with health care are mainly caused by K. pneumoniae. Low birth weight, birth at early gestational weeks, invasive procedures and underlying serious diseases predispose to Klebsiella infections in the newborn. Today, multidrug resistance is a major problem. Mortality is associated with sepsis and underlying primary disease. [ABSTRACT FROM AUTHOR]

Objective: We aimed to present clinical and laboratory findings of patients and the molecular analysis of strains isolated in a Salmonella typhimurium outbreak associated with food served at a wedding reception. Methods: A total of 108 patients admitted to the hospital after eating food served at a wedding reception were included in the study. The patients whose symptoms continued even after supportive care were hospitalized for further treatment. Two sets of blood and stool cultures were obtained from all the hospitalized patients, and samples were taken from the implicated food source as well. The VITEKR 2 Compact (bioMerieux, Marcy l'Etoile, France) automated microbiology system was used together with conventional methods to identify the isolates and determine their antibiotic susceptibility. Serotyping was performed according to the Kauffmann-White scheme using the slide agglutination method. The molecular epidemiology of the isolates was determined by pulsed-field gel electrophoresis using the XbaI enzyme. Results: All the patients presented with common complaints such as fatigue, abdominal pain, fever, diarrhea, nausea, and vomiting that had started 8 to 16 hours after the consumption of the food served. 45 patients were treated in the hospital whereas 63 patients were followed in an ambulatory setting after 4-6 hours of supportive care. Their hospitalization period varied between 1 and 5 days, and all patients were discharged with full recovery. S. typhimurium was isolated from stool cultures of 14 patients, and two of them were also blood culture-positive. All the isolates revealed a single clonal cluster in molecular analysis. All of them were susceptible to ampicillin, ceftriaxone, and ciprofloxacin, but resistant to amikacin. Conclusions: Despite the developments in the food industry in Turkey and across the world, food-borne disease outbreaks still occur. Hygiene rules should be strictly followed and appropriate inspections should be undertaken in the food sector to prevent food-borne outbreaks. [ABSTRACT FROM AUTHOR]

Aim: Orbital tissue infections are common infections of childhood that can lead to severe complications. Herein, we aimed to evaluate the etiologic factors, diagnosis, follow-up, and treatment procedures in pediatric patients with orbital infections. Material and Methods: This study was performed retrospectively between January 2014 and December 2015 in Cerrahpasa Medical Faculty Pediatric Infectious Disease Unit. Patients were studied for age, ophthalmologic examination features, laboratory and radiology results, treatment modalities, and the response to these treatments. Results: Thirty-six patients (21 males, 15 females) with an average age of 71.43±42.24 months (5-168 months) participated in the study in the two-year period. Thirty-two patients (88.9%) had preseptal cellulitis, and four (11.9%) had orbital cellulitis. All patients had eyelid hyperemia, edema, and ocular pain, with chemosis in seven and proptosis in four cases. Twenty-five patients were admitted with fever. All cases were unilateral and 44.4% occurred secondary to paranasal sinusitis. All cases were treated with intravenous cefazolin-amikacin. The mean of duration of hospitalization was 12.02±8.75 days (range, 3-28 days) and the duration of parental antibiotics was 12.83±8.18 days (range, 7-21 days). All patients recovered without any vision loss, only one patient experienced subdural empyema complicating preseptal cellulitis. Conclusions: Most orbital tissue infections occur secondary to paranasal sinusitis in childhood. Orbital tissue infections can be complicated by brain abscess, cavernous sinus thrombophlebitis, and vision loss. Early diagnosis and proper antibiotic treatment are essential to prevent these life-threatening complications. [ABSTRACT FROM AUTHOR]

Chronic suppurative otitis media was diagnosed in a 30-year old female with left ear pain and ear discharge lasting since 5 years intermittently. Lactose-negative, oxidase-negative, Gram-negative small bacilli grown as flat and gray colonies with smooth margins were identified as Kerstersia gyiorum by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry and 16S rRNA analysis. Minimum inhibitory concentration values were determined by broth microdilution method (ciprofloxacin >2 µg/mL, ertapenem <0.25 µg/mL, imipenem 0.5 µg/mL, ceftazidime 2 µg/mL, amikacin ≤4 µg/mL, ceftriaxone ≤0.5 µg/mL, gentamicin 2 µg/mL and tigecycline 1 µg/mL). It was learned that her clinical findings resolved by oral amoxycillin-clavulanic acid and topical ciprofloxacin given empirically. [ABSTRACT FROM AUTHOR]

Objective: Urinary Tract Infections (UTI) are most common causes of bacterial infections in humans. Escherichia coli (E.coli) is the most frequently isolated microorganism in cases of uncomplicated UTI. In this study, we aimed to determine antimicrobial resistance patterns of E.coli strains isolated from patients with UTI. Materials and Methods: E.coli strains isolated from urine cultures of patients admitted to the Hospital of the Medical Faculty of Bezmialem Vakif University were retrospectively evaluated between the dates of January 2013 and December 2013. The bacterial identification and rates of antibiotic resistance were determined using VITEK-2 automatized system. Results: E.coli isolates were found to have low resistance rates to fosfomycin (0.6%), nitrofurantoin (5.3%) and amikacin (8%). Among the other antibiotics, the lowest susceptibility rates were detected to ampicillin (64%), trimetoprim/sulfomethoxazole (43.2%), amoxicillin/clavulonic acid (32.8%). Conclusion: Fosfomisin, nitrofurantoin and amikacin are thought to be suitable antimicrobial agens in the empiric treatment treatment of uncomplicated UTI. [ABSTRACT FROM AUTHOR]