Incidence and Risk Factors for Antibiotic-associated Diarrhea Among Hospitalized Children.

Background: We aimed to evaluate the incidence, clinical findings, and risk factors of antibiotic-associated diarrhea (AAD) in hospitalized children without known comorbid diseases.

Methods: All hospitalized children during the 1-year period that fulfilled the inclusion criteria were included in this study (n = 358). AAD was defined as; ≥2 loose or watery stools per day for a minimum of 24 hours during antibiotic treatment caused by Clostridioides difficile or negative stool tests for identifiable infectious agents.

Neutralization of Wild-Type and Alpha SARS-CoV-2 Variant by CoronaVac® Vaccine and Natural Infection- Induced Antibodies.

One of the immune responses desired to be achieved by SARS-CoV-2 vaccination is to create neutralizing antibodies (nAbs), thus preventing the development and spread of infection. The aim of this study was to investigate the seropositivity rate, anti-spike antibody levels, and neutralizing capacity of these antibodies against wild type (WT) and alpha variants in serum samples of individuals who had been naturally infected or vaccinated with CoronaVac®. Total anti-spike antibody levels were determined in all samples.

Serotype distribution of and pneumococcal vaccine coverage in adults in Turkey between 2015 and 2018.

Objective: To evaluate the serotype distribution and antibiotic resistance in pneumococcal infections in adults and to provide a perspective regarding serotype coverage of both current and future pneumococcal vaccines.

Patients And Methods: This passive surveillance study was conducted with the strains isolated from the specimens of patients with pneumonia (materials isolated from bronchoalveolar lavage), bacteraemia, meningitis, pleuritis and peritonitis between 2015 and 2018. Serogrouping and serotyping were performed by latex particle agglutination and by conventional Quellung reaction using commercial type-specific antisera, respectively.

Identification and antifungal susceptibility of Saprochaete clavata from invasive infections in Turkey.

Saprochaete clavata is an emerging opportunistic pathogen, that causes life-threatening infections, but there are limited evidence and information about the evaluation of in vitro antifungal susceptibility test results. The aim of this study was to determine S. clavata isolates from clinical specimens and to investigate their in vitro antifungal susceptibility.

[Investigation of Plasmid Mediated mcr Colistin Resistance Gene in Clinical Enterobacterales Isolates].

Carbapenems are used in the treatment of infections caused by multidrug-resistant bacteria and colistin (polymyxin E) is used as the last choice of antimicrobial agent in those resistant to carbapenems. The worldwide and increased use of colistin, which causes cell death by disrupting the permeability of the cytoplasmic membrane of gram-negative bacteria, raised the problem of resistance. The transferable colistin resistance enzyme mcr, is a phosphoethanolamine transferase that adds phosphoethanolamine to lipid A and modifies lipopolysaccharides, leading to polymyxin resistance.

Serotype distribution of in children with invasive disease in Turkey: 2015-2018.

: To determine the serotype distribution of pneumococcus causing invasive pneumococcal disease (meningitidis, bacteremia and empyema) in children in Turkey, and to observe potential changes in this distribution in time to guide effective vaccine strategies. : We surveyed with conventional bacteriological techniques and with real-time polymerase chain reaction (RT-PCR) in samples of cerebrospinal fluid (CSF), blood and pleural fluid. strains were isolated from 33 different hospitals in Turkey, which are giving health services to approximately 60% of the Turkish population.

[Comparison of mRNA Levels of Stimulator of Interferon Genes (STING) in Individuals with Natural Immunity to Hepatitis B Virus (HBV), and in those with Chronic Hepatitis B Infection and without HBV].

It has been estimated that currently 350-400 million people have been chronically infected with the hepatitis B virus (HBV) worldwide and approximately one million people die each year due to HBV related diseases. It has been suggested that the viral and host factors, especially the host immune system, may play a role in the chronicity of the HBV infection. Stimulator of interferon genes (STING) is one of the members of the pattern recognition receptor (PRR) that detects the presence of DNA in a human cell, activate synthesis of various cytokines and this protein is thought to be an important member of the immune system against HBV infection.

The Prevalence of Mixed Genotype Infections in Turkish Patients with Hepatitis C: a Multicentered Assessment.

Background: HCV virus infections are one of the major health problems in the world that can cause cirrhosis and liver cancer at a higher rate than other hepatitis data. The aim of this study was to determine the prevalence of mixed infections with different HCV genotypes in Turkey and also to evaluate the current HCV genotype and sub-type distributions by a multicentered assessment.

Methods: The HCV genotype data of 17,578 hepatitis C patients collected from 23 centers from different geographic regions covering all Turkey were collected.

Determination of Seroprevalence of Borrelia burgdorferi IgG in Adult Population Living in Trabzon.

Background: Lyme borreliosis is a tick-borne, multi-systemic infectious disease that is thought to be wide spread in Turkey even though studies on its seroprevalence are limited.

Aims: To determine the seroprevalence of Lyme borreliosis in part of north-eastern Tur-key (in the city of Trabzon), and to identify possible relationships between seropositivity and various factors such as location, gender, age group, occupation, income, and educational level.

Study Design: Retrospective cross-sectional study.

[Investigation of plasmid-mediated quinolone resistance genes in quinolone-resistant Escherichia coli and Klebsiella spp. isolates from bloodstream infections].

One of the treatment options of Escherichia coli and Klebsiella spp. infections which are the most common opportunistic pathogens of gram-negative sepsis is quinolones. Resistance to quinolones which act by disrupting DNA synthesis has been increasing.

[Investigation of carbapenemases in carbapenem-resistant Escherichia coli and Klebsiella pneumoniae strains isolated in 2014 in Turkey].

Carbapenems are the choice of treatment in infections caused by multidrug resistant Enterobacteriaceae. In recent years carbapenem-resistant Enterobacteriaceae isolates due to carbapenemases have been increasingly reported worldwide. Multicenter studies on carbapenemases are scarce in Turkey.

[Comparison of the modified Hodge test and the Carba NP test for detection of carbapenemases in Enterobacteriaceae isolates].

A rapid, practical, and accurate identification of carbapenemase-producing Enterobacteriaceae isolates is crucial for the implementation of appropriate infection control measures and proper treatment of the infections. For this purpose, a large number of phenotypic test methods have been developed, although none has 100% sensitivity and specificity. Variations in sensitivity and specificity of these tests based on the type of beta-lactamase enzymes carried by that isolates might result in differences between regions and countries.

Serotype distribution of Streptococcus pneumoniae in children with invasive diseases in Turkey: 2008-2014.

Successful vaccination policies for protection from invasive pneumococcal diseases (IPD) dependent on determination of the exact serotype distribution in each country. We aimed to identify serotypes of pneumococcal strains causing IPD in children in Turkey and emphasize the change in the serotypes before and after vaccination with 7-valent pneumococcal conjugate vaccine (PCV-7) was included and PCV-13 was newly changed in Turkish National Immunization Program. Streptococcus pneumoniae strains were isolated at 22 different hospitals of Turkey, which provide healthcare services to approximately 65% of the Turkish population.

Effectiveness of transcranial magnetic stimulation application in treatment of tinnitus.

Objective: Pathophysiology of tinnitus known to accompany nearly all disorders in hearing system has not been fully understood, and therefore, there are some difficulties in evaluation and treatment thereof. The objective of the current study is to research the effectiveness of transcranial magnetic stimulation (TMS) application in treatment of tinnitus.

Materials And Methods: Sixty patients aged between 15 and 70 years who applied to a polyclinic of Ear-Nose-Throat Department, Cerrahpasa Medical Faculty, Istanbul University, because of the complaint of tinnitus between January 2009 and July 2009 were selected using simple random sampling method.

[Investigation of integrons, sul1-2 and dfr genes in trimethoprim-sulfametoxazole-resistant Stenotrophomonas maltophilia strains isolated from clinical samples].

Stenotrophomonas maltophilia, which is a non-fermentative gram-negative bacillus, has an increasing importance in nosocomial and opportunistic infections. Since it exhibits resistance to numerous broad-spectrum antibiotics such as aminoglycosides, beta-lactams and tetracyclines, it may considerably limit empirical treatment options. Trimethoprim-sulfamethoxazole (SXT) is recommended as the first-line therapy in the treatment of S.

[Molecular epidemiology, antimicrobial resistance and characterization of extended-spectrum beta-lactamases of Salmonella enterica serotype Paratyphi B clinical isolates].

Although Salmonella enterica serotype Paratyphi B is the less frequently isolated serotype worldwide and in Turkey, it is the most common serotype in our hospital, with a marked increase in 2007. The purpose of this study was to investigate the antibiotic susceptibility and the extended spectrum beta-lactamase (ESBL) profile, and molecular epidemiology of S. Paratyphi B isolates detected in our hospital microbiology laboratory.

[Epidemiology, clinical and microbiological characteristics of invasive streptococcal infections in Turkey, 2010-2011].

A one-year active surveillance study was conducted to investigate the epidemiological and microbiological characteristics of invasive group A streptococci (GAS) infections in Turkey and to provide data for the establishment of national preventive strategies related to invasive GAS infections. A total of 46 clinical microbiology laboratories from 12 different regions of Turkey (Istanbul; Eastern and Western Marmara; Eastern and Western Blacksea; Aegean; Mediterranean; Western, Central, Northeastern, Middle-eastern and Southeastern Anatolia) participated in the study. Accordingly, GAS strains isolated from sterile body sites (blood, cerebrospinal, synovial, pleural, peritoneal, pericardial fluids) in the study centers between June 2010-June 2011, were sent to Maltepe University Hospital Clinical Microbiology Laboratory for microbiological confirmation and further analysis.

[Determination of hepatitis C virus genotypes among hepatitis C patients in Eastern Black Sea Region, Turkey].

Hepatitis C virus (HCV), the major cause of transfusion-associated hepatitis, is an important public health problem in the world as well as in Turkey. HCV is grouped as six distinct genotypes and a large number of closely-related subtypes. Genotyping of HCV is an important tool for providing epidemiological data, prediction of prognosis, and optimization of antiviral therapy.

Laryngeal foreign body mimicking croup.

Foreign body aspiration can be a fatal problem in all groups of ages. However, it is a leading cause of accidental deaths in children. Especially in the pediatric age group, diagnosis can be delayed because of various challenges.

Distribution, virulence attributes and antifungal susceptibility patterns of Candida parapsilosis complex strains isolated from clinical samples.

It was recently proposed that Candida parapsilosis represents a complex composed of three closely related species, i.e., C.

Acute ischemia of the parotid gland and auricle following embolization for epistaxis.

We report a case of ischemia of the auricle and acute parotitis that developed following embolization for epistaxis. A 53-year-old male was previously conservatively treated for epistaxis with bilateral posterior nasal packing due to hypertension. As the bleeding, continued the patient underwent bilateral embolization of the internal maxillary arteries.

[Evaluation of antibiotic susceptibilities and VISA-VRSA rates among MRSA strains isolated from hospitalized patients in intensive care units of hospitals in seven provinces of Turkey].

The aim of this study was to determine whether vancomycin resistant Staphylococcus aureus (VRSA) and vancomycin intermediate susceptible S.aureus (VISA) strains were present among methicillin-resistant S.aureus (MRSA) strains isolated from patients hospitalised at intensive care units (ICU) of hospitals located at different regions of Turkey and to determine the minimum inhibitory concentration (MIC) values of teicoplanin, linezolid, tigecycline, quinupristin-dalfopristin and daptomycin, which are alternative drugs for the treatment of MRSA infections.

Hepatitis B virus genotypes and subgenotypes in the Eastern Black Sea region of Turkey.

Objective: To determine the hepatitis B virus (HBV) genotypes and subgenotypes in patients with HBV infection in the Eastern Black Sea region of Turkey.

Methods: One hundred and thirty-seven patients' samples collected over 5 years (January 2005 to January 2010) at Farabi Hospital in Karadeniz Technical University, Trabzon, Turkey were included in the study. All patients were positive for hepatitis B surface antigen (HBsAg) and HBV DNA.