Africa Declares Wild Polio Is Wiped Out — Yet It Persists In Vaccine-Derived Cases
The Kick Polio Out Of Africa Campaign began in 1996. This week, the World Health Organization announced that wild polio had been eradicated — although there is a caveat.
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Children's Health
August 26, 2020 at 02:42AM
Thứ Tư, 26 tháng 8, 2020
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