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Waning natural immunity in the public due to last year's missing flu season will leave people -- and especially young children -- susceptible to the virus, warn flu trackers assessing this year's risk.
from WebMD Health https://ift.tt/2Y21eTe
Waning natural immunity in the public due to last year's missing flu season will leave people -- and especially young children -- susceptible to the virus, warn flu trackers assessing this year's risk.
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