N.Y. state detects polio case, first in the U.S. since 2013

New York State reported Thursday that it has detected a case of vaccine-derived polio in a person in Rockland County, north of New York City, the first such recorded case in the United States since 2013.

In a statement, the state department of health said the person, who was not identified, was infected with a type 2 vaccine-derived poliovirus, which would have come from oral polio vaccine used in a number of countries, but not the United States. The U.S. stopped using oral polio vaccine in 2000.

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