Epidemiology of influenza A(H1N1)v virus infection in Japan, May - June 2009
Tomoe Shimada(National Institute of Infectious Diseases), Yoshiaki Gu(National Institute of Infectious Diseases), Hajime Kamiya(National Institute of Infectious Diseases), Nobuhiro Komiya(National Institute of Infectious Diseases), Fumito Odaira(National Institute of Infectious Diseases), Tomimasa Sunagawa(National Institute of Infectious Diseases), Hitoshi Takahashi(National Institute of Infectious Diseases), Takao Toyokawa(National Institute of Infectious Diseases), Yuuki Tsuchihashi(National Institute of Infectious Diseases), Yoshinori Yasui(National Institute of Infectious Diseases), Yuki Tada(National Institute of Infectious Diseases), N. Okabe(National Institute of Infectious Diseases)
Cited by 69Open Access
Abstract
Between 9 May and 4 June 2009, a total of 401 laboratory-confirmed cases of influenza A(H1N1)v virus were reported in Japan, from 16 of the 47 Japanese prefectures. The two areas most affected were Osaka prefecture and Kobe city where outbreaks in high schools occurred leading to school closures. To date all cases have had symptoms consistent with seasonal influenza and no severe or fatal cases have been reported.
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