H7N9

The influenza A(H7N9) virus is one subgroup among the larger group of H7 viruses that normally circulate among birds. A number of human infections of the H7N9 virus have been reported in eastern China, mostly in the Yangtze River Delta region since late March 2013. Some of the patients have died of severe pneumonia brought on by the virus. 

A doctor looks at lung CT images and chest films of a man infected with H7N9. The new bird flu could be mutating up to eight times faster than an average flu virus. Photo: Xinhua

H7N9 may mutate 8 times faster than regular flu

The new bird flu could be mutating up to eight times faster than an average flu virus around a protein that binds it to humans, a team of research scientists in Shenzhen says.

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