{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,16]],"date-time":"2026-07-16T08:44:13Z","timestamp":1784191453365,"version":"3.55.0"},"reference-count":32,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2011,4,22]],"date-time":"2011-04-22T00:00:00Z","timestamp":1303430400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Medical Virology"],"published-print":{"date-parts":[[2011,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Hepatitis A virus (HAV) is usually transmitted by an oral\u2013fecal route and is prevalent not only in developing countries but also in developed countries. In the present study, the phylogenetic characterization of the VP1\/2A junction region (321 nucleotides) of China HAV isolates was examined. Anti\u2010HAV IgM\u2010positive serum samples were collected from 8 provinces, including 20 cities or counties in China from 2003 to 2008; 337 isolates from 406 HAV patients' serum samples were amplified by RT\u2010PCR, sequenced at the VP1\/2A junction region and aligned with the published sequences from GenBank to establish phylogenetic analysis. All China HAV isolates in this study belonged to genotype I, with 98.8% (333\/337) of samples clustering in sub\u2010genotype IA and 1.2% (4\/337) in sub\u2010genotype IB. In addition, sub\u2010genotype IA isolates clustered into four groups (92.7\u2013100% nucleotide identity), and the samples collected from all China HAV isolates in this investigation showed 87.5\u2013100% nucleotide identity, but the amino acids in this region were more conserved (95.2\u2013100% identity). Few unique amino acid changes could be deduced (VP1\u2010253: Glu\u2009\u2192\u2009Gly; 2A\u201034: Pro\u2009\u2192\u2009Ala; 2A\u201033: Leu\u2009\u2192\u2009Phe). Genetically identical or similar HAV strains existed in some investigated areas in China during different years, suggesting that an indigenous strain has been circulating in those regions. This report provides new data on the genetic relatedness and molecular epidemiology of HAV isolates from China as well as the distribution of sub\u2010genotype IA and IB in this part of the world. J. Med. Virol. 83:1134\u20131141, 2011. \u00a9 2011 Wiley\u2010Liss, Inc.<\/jats:p>","DOI":"10.1002\/jmv.22086","type":"journal-article","created":{"date-parts":[[2011,4,22]],"date-time":"2011-04-22T15:32:33Z","timestamp":1303486353000},"page":"1134-1141","source":"Crossref","is-referenced-by-count":12,"title":["Genotyping of acute hepatitis a virus isolates from China, 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