If You Grew Up in the US, You’re Probably Already Vaccinated for Polio - BNN

Anyone who has received a four-dose course by the age of six is considered fully vaccinated for life

(Bloomberg) -- If you grew up in the US, chances are good that youre vaccinated against polio. Its also likely that you havent given it much thought given that the disease has been teetering toward g… [+1265 chars]

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