Astrovirus associated acute gastroenteritis in western India: predominance of dual serotype strains

Infection, Genetics and Evolution : Journal of Molecular Epidemiology and Evolutionary Genetics in Infectious Diseases
Harsha VermaV Gopalkrishna

Abstract

A five-year (2004-2008) study was conducted on patients with acute gastroenteritis from different cities of Maharashtra, western India to detect and characterize astrovirus infections. A total of 1340 fecal specimens were collected from sporadic cases that included 1240 children (<or=8 years) and 100 adults (18-70 years) from Pune, Aurangabad and Nagpur cities. All specimens were subjected to astrovirus specific RT-PCR followed by sequencing and phylogenetic analysis. The overall positivity to astrovirus was found to be 3.1% with highest number of infections in winter months. A high prevalence of astrovirus was observed in children <or=1 year of age. Phylogenetic analysis of the partial ORF1a (serine protease) and ORF2 (capsid gene) regions showed the circulation of three probable recombinant types with different ORF1a/ORF2 specificities (HAstV-8/HAstV-1, HAstV-7/HAstV-2, HAstV-4/HAstV-5) along with HAstV-8 of a single specificity in the study population. HAstV-8/HAstV-1, specificity predominated (67.7%) in the region followed by HAstV-7/HAstV-2 (9.7%), HAstV-4/HAstV-5 (6.5%) and HAstV-8 (16%) types. This is the first report that highlights the genetic diversity of astrovirus strains circulating in Maharashtra state, western In...Continue Reading

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Citations

Jan 8, 2011·Epidemiology and Infection·H VermaV Gopalkrishna
Jun 13, 2012·International Journal of Environmental Research and Public Health·Shobha ChitambarSashikant Pawar
Feb 11, 2014·Journal of Virological Methods·Akihiko HataHiroyuki Katayama
Feb 13, 2015·Virusdisease·Triveni Krishnan
Nov 5, 2013·Journal of Clinical Virology : the Official Publication of the Pan American Society for Clinical Virology·Mokibul Hassan AfradTasnim Azim
Apr 17, 2015·Journal of Medical Virology·Aksara ThongprachumHiroshi Ushijima
Sep 26, 2013·Infection, Genetics and Evolution : Journal of Molecular Epidemiology and Evolutionary Genetics in Infectious Diseases·Madhusudhan PativadaTriveni Krishnan
Aug 28, 2012·Infection, Genetics and Evolution : Journal of Molecular Epidemiology and Evolutionary Genetics in Infectious Diseases·Madhusudhan PativadaTriveni Krishnan
Oct 4, 2014·Clinical Microbiology Reviews·Albert BoschSusana Guix
Aug 15, 2015·PloS One·Maria da Penha Trindade Pinheiro XavierEduardo de Mello Volotão
Nov 1, 2018·Transboundary and Emerging Diseases·Jobin Jose KattoorRaj Kumar Singh
Feb 23, 2021·Frontiers in Microbiology·Sanjaya Kumar ShresthaJennifer L Dembinski

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