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Current Trends Influenza--Japan

Japanese health authorities have reported to the World Health Organization extensive influenza activity among school-age children since mid-January. Influenza B strains (B/Singapore/222/79-like) have been isolated in 30 prefectures. In northern parts of Japan, small outbreaks of influenza type A(H3N2) have been occurring. Sporadic cases of influenza A(H1N1) have also been reported. Reported by WHO Collaborating Influenza Center, Center for Infectious Diseases, CDC.

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