You are using an older browser version. Please use a supported version for the best MSN experience.

Single polio case in New York may be 'very, very tip of the iceberg,' CDC official says

A polio case identified in New York last month is “the tip of the iceberg” and an indication there “must be several hundred cases in the community circulating,” according to José Romero, director of the CDC’s National Center for Immunization and Respiratory Diseases. CNN’s Elizabeth Cohen has more.

Latest Videos

Featured Partners

image beaconimage beaconimage beacon