Avian Influenza H7N9 — China
The avian [influenza] strain that has killed 17 people in China may have originated in wild ducks, says a Singapore scientist. Proteins on the virus’ shell appear to have come from the birds, said associate professor Gavin Smith of the Duke-NUS Graduate Medical School Emerging Infectious Diseases programme. This could have happened years, not months, ago.
Prof Smith’s view goes at least some way towards answering the burning questions that have emerged since the start of the outbreak: where
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