Publications by authors named "Olcay Yasa"

Article Synopsis
  • In Turkey, a single-dose varicella vaccine was introduced in February 2013, aiming to reduce hospitalizations related to chickenpox among children under 18 years old.
  • A study analyzed hospitalization data from 2008 to 2018, comparing rates before and after the vaccine's introduction, finding a significant decrease in hospitalizations (3.79 to 2.87 per 100,000 children per year).
  • The most notable reduction was in children aged 1-5 years, with a 60.2% drop in hospitalizations post-vaccine, demonstrating the vaccine's effectiveness in preventing severe cases of varicella.
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Article Synopsis
  • The study investigates the relationship between gut microbiota and recovery from acute infectious diarrhea in children caused by rotavirus, focusing on the effect of the probiotic CNCM I-745.
  • Data was collected from 10 infected children and 6 healthy kids through fecal samples over 30 days, allowing for analysis of microbial composition and diversity.
  • Results showed a quick recovery for infected children after probiotic treatment, with significant changes in gut microbiota observed, emphasizing the role of time in understanding dysbiosis related to diarrhea.
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Introduction: Varicella in previously immunized individuals, known as "breakthrough varicella". While the majority of breakthrough cases are mild, some may be severe, requiring hospitalization in previously healthy children or children with an underlying condition.

Methods: This report, as a part of the prospective national pediatric varicella hospitalizations study (including 29 centers, represent 50% of pediatric population) in Turkey, is aimed to evaluate breakthrough varicella infection requiring hospitalization before the routine use of single-dose live varicella vaccine in national program from 2008 to 2013 (<10% of the pediatric age group received a single-dose vaccine).

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Objective: Two randomized controlled clinical trials have shown that Lactobacillus (L) reuteri DSM 17938 reduces the duration of diarrhea in children hospitalized due to acute infectious diarrhea. This was the first trial evaluating the efficacy of L. reuteri DSM 17938 in outpatient children with acute infectious diarrhea.

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Successful vaccination policies for protection from bacterial meningitis are dependent on determination of the etiology of bacterial meningitis. Cerebrospinal fluid (CSF) samples were obtained prospectively from children from 1 month to ≤18 years of age hospitalized with suspected meningitis, in order to determine the etiology of meningitis in Turkey. DNA evidence of Neisseria meningitidis (N.

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Varicella can cause complications that are potentially serious and require hospitalization. Our current understanding of the causes and incidence of varicella-related hospitalization in Turkey is limited and sufficiently accurate epidemiological and economical information is lacking. The aim of this study was to estimate the annual incidence of varicella-related hospitalizations, describe the complications, and estimate the annual mortality and cost of varicella in children.

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Two cases with macroscopic hematuria as complication of acute mumps infection is reported. The patients have neither been vaccinated against mumps nor had mumps infection earlier. Macroscopic hematuria resolved spontaneously and renal functions did not deteriorate in both the patients.

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