a retrospective analysis of acute gastroenteritis agents in children admitted to a university hospital pediatric emergency unit

background: acute gastroenteritis is responsible observed in all age groups, especially infants and children. the etiology and clinical course of acute gastroenteritis may vary with age and etiological agents. in developing countries, the morbidity and mortality associated with infectious diarrhea is higher in children younger than five-years-of-age. objectives: the aim of this study was to determine the prevalence and seasonal distribution of the major agents of acute gastroenteritis in children who were admitted to a turkish university hospital pediatric emergency unit during 2009. patients and methods: seasonal distribution within a one year period and quantitative distribution were analyzed with demographic data and laboratory findings. a total of 644 subjects were enrolled in the study, with a mean age of 4.14 years. pathogens were detected in 183 (28.4%) stool samples in children less than 16 years, admitted with acute gastroenteritis. results: pathogens were detected in 184 (28.4%) stool samples. the age distributions of the cases were 0 - 24 months (n = 59), 2 - 5 years (n = 100), and > 5 years (n = 25). the detection rate of rotavirus, norovirus and adenovirus were; 12.7% (75/588), 9.8% (51/520) and 4.9% (28/575), respectively. bacterial agents were detected in 36 cases. the main agent was norovirus in the 0 - 24 months group (n = 25, 42.4%), and rotavirus for ages 2 - 5 years (n = 43, 43%) and > 5 years. on the monthly distribution, cases of rotavirus were found to be more frequent in the first four months of the year. discussion: viruses were the major pathogens in all age groups. norovirus was the leading pathogen in the first two years. for the age groups 2 - 5 years and 6 - 16 years, rotavirus was the major pathogen.