Originally posted by wtg:
The New York State Health Department confirmed a case of polio on Thursday, the first known infection in the U.S. in nearly a decade.
A resident of Rockland County, a suburb of New York City, tested positive for polio, according to the state health department. The Centers for Disease Control and Prevention confirmed the infection.
Health-care providers should look for additional polio cases, state health officials said. The chain of infection that resulted in the New York case is believed to have originated outside the U.S. No cases of polio have originated in the U.S. since 1979, according to the CDC.
The polio strain the individual caught, known as revertant Sabin type 2 virus, suggests the chain of infection began with someone who received the oral polio vaccine, according to the state health department. The oral polio vaccine contains a mild virus strain that is still able to replicate, which means people who receive it can spread the virus to others.
The oral polio vaccine is no longer administered in the U.S., which suggests the chain of transmission began abroad, according to New York health officials. The U.S. uses an inactivated polio vaccine that is administered as a shot in the leg or arm. This vaccine uses a non-replicating virus strain so people who receive it cannot spread the virus to others.