As of July 1, a critical surveillance program is monitoring for only two pathogens instead of the usual eight.

A brief guide for Americans

It's a rare victory for gun-control advocates.

A long-discredited researcher and vaccine skeptic will conduct a government study on whether vaccines cause autism.

U.S. Rep. Chellie Pingree said the rationale given by Lee Dudek, the acting commissioner of the Social Security Administration, is 'infuriating and absurd.'