Nigeria completed its second anti-polio outbreak response from 15-24 June 2019, following the detection of positive circulating vaccine-derived poliovirus type 2 (cVDPV2) environment samples. WHO
Nigeria completed its second anti-polio outbreak response from 15-24 June 2019, following the detection of positive circulating vaccine-derived poliovirus type 2 (cVDPV2) environment samples. WHO