Summary of new viruses this week: Afghanistan –five wild poliovirus type 1 (WPV1) positive environmental samples. Pakistan –one WPV1 positive environmental sample. Papua New Guinea – three cases of circulating vaccine-derived poliovirus type 1 (cVDPV1). DRC- one case of circulating vaccine-derived poliovirus type 2 (cVDPV2). Nigeria – two cases of cVDPV2. Somalia- two cVDPV2 positive environmental samples. See country sections below for more details.