FIC: Mexican Flu Pandemic Study Supports Social Distancing
Would closing schools, movie theaters, and restaurants help improve health? Yes, at least in terms of mitigating unusual infectious disease outbreaks. According to NIH researchers, these social distancing interventions proved effective during the 2009 influenza pandemic in Mexico. Mexican health authorities implemented a nationwide mandatory school closure policy, effectively reducing disease transmission by more than one-third. The research team provided the first comprehensive epidemiological description of the age, geographical, and severity patterns of the 2009 pandemic in Mexico. Eighteen-day periods of mandatory school closures and other social distancing measures were associated with a 29 to 37 percent reduction in influenza transmission rates in Mexico during the 2009 pandemic. The authors applied mathematical modeling to influenza surveillance data compiled by a large private health system, the Mexican Institute for Social Security, which covers 40 percent of the population. (NIH authors: G. Chowell, C. Viboud, L. Simonsen, J. Tamerius, M.A. Miller; PLoS Med 8:e1000436, 2011)
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