Unvaccinated young adult becomes first US polio case in nearly a decade

The New York patient appeared to have a vaccine-derived strain of the virus, although they hadn't traveled outside the country

An unvaccinated young adult from New York recently contracted polio, the first US case in nearly a decade, health officials said Thursday.

Officials said the patient, who lives in Rockland county, had developed paralysis. The person developed symptoms a month ago and did not recently travel outside the country, county health officials said.