Circulating vaccine-derived poliovirus – Myanmar

[Admin]

The National IHR Focal Point of Myanmar has notified WHO of 2 cases of circulating vaccine-derived poliovirus type 2 (cVDPV2).

Laboratory confirmation that VDPV type 2 is circulating in Myanmar was received on 7 November 2015. The circulating VDPV2 was isolated from a 16-month old boy who developed acute flaccid paralysis (AFP) on 5 October. The child had not been previously vaccinated against polio. This strain is from the same VDPV2 strain isolated earlier this year from a polio case (a 28-month-old child) that had developed AFP on 16 April. The two cases are from the same township in Rakhine state. The genetic changes of the isolates detected in April and October suggest that the cVDPV2 may have been circulating for more than one year.

View the full article