Health and Human Services Secretary Robert F. Kennedy Jr. is changing the way vaccines are tested. The department will now ...

People might have been exposed to the virus April 21-28 in Irving Park, at O’Hare Airport and in three southwest suburbs, ...

Three children have died in the most recent outbreak of measles, to date. This article reviews the signs, symptoms, and ...

The government is putting money into a new kind of vaccine that could work against different types of viruses with just one ...