Closing live poultry markets in 4 Chinese cities in the spring of 2013 was associated with an immediate and substantial reduction in the incidence of human infections with avian influenza A H7N9, report researchers from China and Hong Kong (Yu H et al. Lancet. doi:10.1016/S0140-673661904-2 [published online October 31, 2013]).
Using data from 60 of the 85 human cases of avian influenza A H7N9 infection reported from March 31 to June 7, 2013, the researchers developed a statistical model to determine patterns in influenza incidence. During this time, hundreds of markets were closed in the cities of Shanghai, Hangzhou, Huzhou, and Nanjing. Within 2 to 3 days of the closures, the daily number of infections decreased by 97% to 99%, depending on the city.
Friedrich MJ. Closing Live Poultry Markets Slowed Avian Flu in China. JAMA. 2013;310(23):2497. doi:10.1001/jama.2013.283885
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