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Journal of Clinical Microbiology, April 2003, p. 1756-1759, Vol. 41, No. 4
0095-1137/03/$08.00+0 DOI: 10.1128/JCM.41.4.1756-1759.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.
Prevalence of Norwalk-Like Virus Infections in Cases of Viral Gastroenteritis among Children in Osaka City, Japan
Nobuhiro Iritani,1,2* Yoshiyuki Seto,1,2 Hideyuki Kubo,1 Tsukasa Murakami,1 Kosuke Haruki,1 Minoru Ayata,2 and Hisashi Ogura2
Department of Microbiology, Osaka City Institute of Public Health and Environmental Sciences, 8-34 Tojo-cho, Tennoji-ku, Osaka 543-0026,1
Department of Virology, Osaka City University Medical School, 1-4-3 Asahimachi, Abeno-ku, Osaka 545-8585, Japan2
Received 6 May 2002/
Returned for modification 30 June 2002/
Accepted 24 January 2003
Surveillance of Norwalk-like virus (NLV) infections in cases of pediatric gastroenteritis between April 1996 and March 2000 showed that NLVs were an important causative agent in viral gastroenteritis cases among children between November and January in those years. The predominant type of NLV was closely related to Lordsdale virus in genogroup 2. During the 1999-2000 season, Arg320-like strains, which may be genetic recombinants, suddenly appeared and spread.
* Corresponding author. Mailing address: Department of Microbiology, Osaka City Institute of Public Health and Environmental Sciences, 8-34 Tojo-cho, Tennoji-ku, Osaka 543-0026, Japan. Phone: 81-6-6771-3148. Fax: 81-6-6772-0676. E-mail:
n.iritani{at}iphes.city.osaka.jp.
Journal of Clinical Microbiology, April 2003, p. 1756-1759, Vol. 41, No. 4
0095-1137/03/$08.00+0 DOI: 10.1128/JCM.41.4.1756-1759.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.
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