Africa is declared free of wild polio – a landmark moment that comes after Nigeria goes four years without any cases. Its eradication comes after a decades-long campaign that has sometimes cost vaccinators their lives.
Fuente: Youtube
Africa is declared free of wild polio – a landmark moment that comes after Nigeria goes four years without any cases. Its eradication comes after a decades-long campaign that has sometimes cost vaccinators their lives.
Fuente: Youtube
