Bird flu infects three in China

H7N9 influenza observed for the first time in humans

By Tina Hesman Saey, 14:35 PM April 1, 2013

Three people in China have contracted a form of bird flu not seen before in humans, the Chinese Center for Disease Control and Prevention reports. The agency confirmed March 29 that two men in Shanghai have died of infection with H7N9 avian influenza, and a woman in Anhui province is critically ill with the virus.

Symptoms in all three patients included cough and fever and then progressed to severe pneumonia and difficulty breathing.

There are no known connections linking the people, and the vi...

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