FILE - In this Friday, Sept. 16, 2016 file photo, a woman receives a flu vaccine shot at a community fair in Brownsville, Texas. On Wednesday, June 21, 2017, U.S. health officials released new estimates showing the previous winter’s flu vaccine was ineffective in protecting older Americans against the illness, even though the vaccine was well-matched to the flu bugs going around. (Jason Hoekema/The Brownsville Herald via AP)
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