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H7N9 avian flu

H7N9 refers to a subgroup of H7 influenza viruses that normally circulates among birds. Human infections of H7N9 have been reported in parts of China, with some people dying of severe pneumonia.

Containing bird flu viruses a life and death battle in China

Containing bird flu viruses a life and death battle in China

Bird flu sub-types affecting humans are named with science in mind, factually and without emotion. As innocuous as the four-character combinations of the letters H, N and numbers sound, though, there is every reason to be edgy about them. With H7N9 causing deaths around China, H9N2 re-emerging after a four-year hiatus and H5N1 a constant threat, a new killer variant, H10N8, has surfaced on the mainland.