{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,9]],"date-time":"2025-10-09T06:33:52Z","timestamp":1759991632799},"reference-count":30,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2001,5,31]],"date-time":"2001-05-31T00:00:00Z","timestamp":991267200000},"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":[[2001,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Epidemics of acute hemorrhagic conjunctivitis (AHC) caused by a variant of coxsackievirus A24 (CA24v) reappeared in Taiwan in 1990 and 1994, following the first two epidemics of 1985\u201386 and 1988\u201389. To analyze the genetic diversity of recent CA24v in Taiwan, 7 Taiwanese strains isolated during the 1990\u201394 period were studied together with one Japanese and two Thai strains isolated in 1993. A fragment of 674 nucleotides between the carboxy terminal 3A and the amino terminal 3D polymerase, including the entire 3C protease (3C<jats:sup>pro<\/jats:sup>), was amplified by a reverse transcription\u2010polymerase chain reaction (RT\u2010PCR) and the nucleotide sequences were determined. In the 549 nucleotides (183 amino acids) of the entire 3C<jats:sup>pro<\/jats:sup>, we found nucleotide differences at 80 positions between 10 strains and the prototype strain, EH24\/70, one of the earliest strains of CA24v. Most of the nucleotide changes were synonymous substitutions and only nine amino acid changes were found. The nucleotide sequence homologies among 71 strains worldwide were 88\u2013100%. These 71 nucleotide sequences were then analyzed by Neighbor\u2010joining method and phylogenetically separated into three distinct genotypes. Genotype I consisted of early strains isolated in 1970\u201371 from Singapore and Hong Kong. Genotype II included isolates from Singapore and Thailand obtained in 1975. Genotype III comprised strains from the eastern hemisphere isolated in 1985\u201394 from Japan, Taiwan, China, Hong Kong, Thailand, Singapore, Pakistan and Ghana. They were further divided chronologically into six clusters. The recent isolates from Taiwan obtained in 1985\/1986, 1988\/1989 and 1990\u201394 were classified into genotype III Clusters 1, 5, and 6 respectively. The evolutionary rate was re\u2010estimated to be 3\u2009\u00d7\u200910<jats:sup>\u2212\u20093<\/jats:sup> 30 years after the emergence of the virus. J. Med. Virol. 64:269\u2013274, 2001. \u00a9 2001 Wiley\u2010Liss, Inc.<\/jats:p>","DOI":"10.1002\/jmv.1046","type":"journal-article","created":{"date-parts":[[2002,8,25]],"date-time":"2002-08-25T21:43:33Z","timestamp":1030311813000},"page":"269-274","source":"Crossref","is-referenced-by-count":33,"title":["Genetic analysis of recent Taiwanese isolates of a variant of coxsackievirus 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