Emerging epidemiology of H7N9 avian flu2013; 346 doi: http://dx.doi.org/10.1136/bmj.f2717 (Published 01 May 2013) Cite this as: 2013;346:f2717
Enhanced surveillance for the new H7N9 avian flu identified 82 confirmed cases in six areas of China between 25 March and 17 April 2013. Seventeen infected people died of respiratory complications …
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