How Polio Crept Back Into the U.S. - ProPublica

U.S. public health agencies generally don’t test wastewater for signs of polio. That may have given the virus time to circulate silently before it paralyzed a New York man.

ProPublica is a nonprofit newsroom that investigates abuses of power. Sign up to receive our biggest stories as soon as theyre published. Update, July 26, 2022: This story has been updated to reflec… [+10718 chars]

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