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. 2018 Jul 20;67(28):787–789. doi: 10.15585/mmwr.mm6728a6

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The figure above is a map of the Horn of Africa region showing environmental surveillance sites for detection of polioviruses in Ethiopia, Kenya, and Somalia during 2017–2018. — Environmental surveillance for detection of polioviruses — three countries, Horn of Africa region,* 2017–2018

Abbreviation: cVDPV = circulating vaccine-derived poliovirus.

* Ethiopia, Kenya, and Somalia. Borders for states (Ethiopia), counties (Kenya), and regions (Somalia) are indicated by lines within countries.