New York health officials said that the first U.S. case of polio in nearly a decade has been confirmed in a young unvaccinated adult in Rockland County. 

• He developed symptoms around June 2022, even though he did not travel outside the country.
• Thus, it is likely that, he got contracted to vaccine-derived strain of the polio virus, perhaps from someone who received live vaccine.
• Investigators are now working to determine specifically how the infection happened and whether others were exposed, while health officials have scheduled polio vaccination clinics for Friday and Monday in New York.