Interim Estimates of 2018-19 Seasonal Influenza Vaccine Effectiveness --- United States, February 2019

Feb 14, 2019
On the basis of data from the U.S. Influenza Vaccine Effectiveness Network on 3,254 children and adults with acute respiratory illness during November 23, 2018-February 2, 2019, the overall estimated effectiveness of seasonal influenza vaccine for preventing medically attended, laboratory-confirmed influenza virus infection was 47%.

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