美国 Stone& Webster ---厂商监检(Source Surveillance)人员训练教材
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We built Google Flu Trends as a complementary data source to the surveillance systems run by the CDC.
FORBES: How Accurate Is Google Flu Trends?
While the source of the virus remains unknown, further surveillance will help in understanding its transmission, said Liang Wannian, director general of the health emergency division of China's National Health and Family Planning Commission.
WSJ: Bird Flu Found Outside China's Mainland
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