The summaries below provide a situational update on circulating vaccine-derived poliovirus type 2 (cVDPV2) outbreaks in the WHO African and Eastern Mediterranean regions. No wild poliovirus has been detected on the African continent since September 2016.
In the Lake Chad Basin (LCB) sub-region, multiple cVDPV2 outbreaks continue to spread. All the countries that comprise the sub-region (Niger, Cameroon, and Nigeria) have reported outbreaks in either human or environmental samples.
Published on July 31, 2019
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