By Ethan Covey
Sewage samples from four European Union/European Economic Area (EU/EEA) countries and the United Kingdom have tested positive for circulating vaccine-derived poliovirus type 2 (cVDPV2), according to a briefing from the European Centre for Disease Prevention and Control (ECDC).
This represents the first time that cVDPV2 has been detected in EU/EEA countries via environmental surveillance.