June 6, 20197 yr comment_13385 On 23 May 2019, WHO received notification through the Global Polio Laboratory Network (GPLN) of the detection of circulating vaccine-derived poliovirus type 2 (cVDPV2) from an environmental sample collected on 20 April 2019 in a hospital in Northern Cameroon which borders Borno state in Nigeria and Chad. View the full article Report
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