Philippines admits polio outbreak caused by polio vaccine

Philippine health officials declared a polio outbreak in the country on Thursday, nearly two decades after the World Health Organization declared it to be free of the highly contagious and potentially deadly disease.

WHO and UNICEF said in a joint statement the polio outbreak in the Philippines is concerning because it is caused by vaccine-derived poliovirus type 2.

They said the last known case from a wild strain of the virus in the Philippines was in 1993. Wild poliovirus type 2 was declared globally eradicated in 2015.

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