- The U.S. Centers for Disease Control and Prevention is expanding its wastewater testing for polio in parts of Michigan and Pennsylvania.
- Polio outbreaks once caused panic in the United States but those concerns died once a vaccine was created and widely distributed in the 1950s and 1960s.
- Concerns over the spread of polio have been renewed this year, however, after the first case of paralytic polio in nearly a decade was diagnosed in an unvaccinated man in Rockland County, New York, in July.