NEW YORK—Philadelphia and Oakland County, Michigan, are joining the small list of U.S. localities that are looking for signs of polio infections in sewage, U.S. health officials said Wednesday.
The Centers for Disease Control and Prevention (CDC) said the communities will test for polio in sewage for at least four months. Communities in New York state began testing earlier this year after a man was diagnosed with paralytic polio outside New York City.
CDC officials say they have been talking with other communities about also starting polio wastewater testing. They are focused on cities and counties with low polio vaccination coverage and those in which travelers had visited the New York communities where polio was found….