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Article: Introduction and Transmission of 2009 Pandemic Influenza A (H1N1) Virus - Kenya, June-July 2009

Article from:
MMWR. Morbidity and Mortality Weekly Report
Article date:
October 23, 2009
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In April 2009, in the United States, the first cases of 2009 pandemic influenza A (H1N1) virus infection were reported (1). On June 11, the World Health Organization (WHO) declared an influenza pandemic because of widespread transmission worldwide (2). As of September 13, all six WHO regions had reported approximately 296,471 cases of pandemic H1N1, including 3,486 deaths (3). On June 29, the first case of pandemic H1N1 was confirmed in Kenya. At that time, only four other countries in sub-Saharan Africa had reported cases (3), and secondary transmission had not been documented in the region. Surveillance activities in Kenya detected four separate introductions of the virus into the ...

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