Polio found in New York wastewater month before confirmed case emerged

CDC says findings indicate others may be shedding virus as officials urge residents to ensure they're vaccinated

The polio virus was present in wastewater in a New York City suburb a month before health officials there announced a confirmed case of the disease last month, state health officials said on Monday, urging residents to be sure they have been vaccinated.

The discovery of the disease from wastewater samples collected in June means the virus was present in the community before the Rockland county adult's diagnosis was made public on 21 July. The case marked the first in a US adult in nearly a decade.