The Global Polio Eradication Initiative (GPEI) announced that a circulating vaccine-derived poliovirus type 1 (cVDPV1) outbreak has been declared in Yemen.
Fifteen cVDPV1 cases were reported this week. These genetically-linked VDPV1 were isolated from 14 AFP cases, with onset of paralysis ranging from 31 January to 18 June 2020 (with a further AFP case from June 2019 retrospectively confirmed).
The cases are from different districts of Saada Governorate, a relatively densely populated area, which has also been affected in the past by conflict and access issues,in the north-west of the country.
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