NPR News: In The U.S., Flu Season Could Be Unusually Harsh This Year

In The U.S., Flu Season Could Be Unusually Harsh This Year
Health officials fear the U.S. may have a nasty flu season because the main flu virus circulating this year tends to hit people hard and the flu vaccine may be weaker than normal.

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Làm đẹp Blog 247 December 9, 2017 at 04:32AM
Category Health & Science