and vaccine-derived poliovirus (VDPV) in Pune, said the officials. According to officials, a technical team from WHO-NPSN and district officials visited Pune’s urban areas to identify sewage ...

and vaccine-derived poliovirus (VDPV) in Pune, said the officials. Based on an analysis of the sewerage drainage system and the location of high-risk populations in the catchment areas of sewage ...