Conduct test verification and source surveillance.

执行测试确认和资源准备。

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The development of PFGE molecular subtyping surveillance network would contribute to the active surveillance, outbreak investigation and source tracking for Shigellosis.

PFGE分子分型监测网络的建立，有助于细菌性痢疾的主动监测、暴发调查和传染源追踪。

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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