ABSTRACT
During a 2-year period in 2005-2007, we conducted surveillance of group A rotaviruses and other enteric agents among patients hospitalized with acute gastroenteritis in 8 different cities of the Russian Federation. Fecal specimens were gathered from 3208 children (including 2848 children aged <5 years) and 1354 adults who were admitted to hospitals in Moscow, St. Petersburg, Chelyabinsk, Nizhnii Novgorod, Tyumen, Khabarovsk, Makhachkala, and Yakutsk. Polymerase chain reaction was performed to detect rotaviruses of groups A and C, noroviruses of genogroups I and II, astrovirus, sapovirus, and enteric adenoviruses (group F). Group A rotavirus was the most common viral pathogen detected among children aged <5 years (43.6%), followed by norovirus (12.5%), whereas norovirus was the pathogen most commonly detected in adults (11.9%). P and G genotypes were determined for 515 rotavirus specimens, and the most prevalent genotypes were G1P[8] (44.9%), G4P[8] (40.0%), G2P[4] (8.5%), and G3P[8] (6.6%). This study is the first multicenter study of rotaviruses in the Russian Federation and documents the important burden of disease caused by this pathogen, which soon may be preventable by vaccination.
Subject(s)
Diarrhea/virology , Rotavirus Infections/epidemiology , Acute Disease , Adolescent , Adult , Aged , Child , Child, Preschool , Diarrhea/epidemiology , Hospitalization , Humans , Infant , Infant, Newborn , Middle Aged , Rotavirus/classification , Rotavirus/genetics , Russia/epidemiology , Seasons , Time FactorsABSTRACT
AIM: To study seasonal and age features of etiological structure of acute intestinal infections (AII) in the territory of the RF. MATERIAL AND METHODS: A total of 7388 AII inpatients aged from 1 day to 90 years from 7 cities (Moscow, St-Petersburg, Nizhniy Novgorod, Chelyabinsk, Tyumen, Makhachkala and Khabarovsk) of the RF participated in a trial conducted from December 2001 to September 2006 The patients were examined with diagnostic tests based on polymerase chain reaction (PCR) for detection of rotaviruses of group A (RVA), noroviruses, astroviruses, adenoviruses, salmonella, termophilic campilobacteria, shigella and enteroinvasive Escherichia coli (EIEC). RESULTS: The above agents were detected in 72% children and 52% adults. In children RVA and noroviruses occurred most frequently (29.5% and 11%, respectively). The adults carried most often salmonella (9.3%), noroviruses (8.4%), RVA (7.8%) and Schigella in combination with EIEC (7.0%). CONCLUSION: Viral agents are essential or prevailing causative agents of AII at different ages. Seasonal and age-related trends of AII morbidity are characterized.
