Wastewater polio test results in New York and New York City, March 9-October 11, 2022

Wastewater polio test results, by jurisdiction (N = 1,053)--13 counties in New York and New York City, March 9-October 11, 2022. Abbreviation: PV2 = poliovirus type 2. Sampling sites are sewersheds defined as the community area served by a wastewater collection system. Testing was conducted to determine if a sample was negative or positive for PV2, and if positive for PV2, whether the PV2 was genetically linked to an unvaccinated paralytic poliomyelitis patient from Rockland County, New York identified in July 2022. Some samples had sequencing insufficient to determine relation to the Rockland County patient (ie, linkage to patient unknown). Indeterminate results are excluded from this figure. Indeterminate results include those from samples that tested positive using real-time reverse transcription polymerase chain reaction but not enough viral material was available to complete sequencing. Specimens pending sequencing results are also excluded. Number of samples in each jurisdiction include New York City (408) and the following New York counties: Rockland (124), Putnam (20), Orange (280), Nassau (85), Sullivan (21), Westchester (83), Suffolk (14), and Ulster (18). (Source: Ryerson AB, Lang D, Alazawi MA, et al. Wastewater testing and detection of poliovirus type 2 genetically linked to virus isolated from a paralytic polio case - New York, March 9-October 11, 2022. MMWR Morb Mortal Wkly Rep 2022;71[44]:1418-24. Public domain.)