Circulating vaccine-derived poliovirus – Ukraine

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In Ukraine, 2 cases of circulating vaccine-derived poliovirus type 1 (cVDPV1) have been confirmed, with dates of onset of paralysis on 30 June and 7 July 2015. Both are from the Zakarpatskaya oblast, in south-western Ukraine, bordering Romania, Hungary, Slovakia and Poland. One child was 4 years old and the other 10 months old at the time of onset of paralysis.

Ukraine had been at particular risk of emergence of a cVDPV, due to inadequate vaccination coverage. In 2014, only 50% of children were fully immunized against polio and other vaccine-preventable diseases.

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