Yequn Zhang

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BACKGROUND After the 2009 influenza A(H1N1)pdm09 pandemic, China established its first severe acute respiratory infections (SARI) sentinel surveillance system. METHODS We analyzed data from SARI cases in 10 hospitals in 10 provinces in China from February 2011 to October 2013. RESULTS Among 5,644 SARI cases, 330 (6%) were influenza-positive. Among(More)
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