"Measles is really the most contagious illness that we know of," one expert said, which is why vaccinations are so important.

Health officials in Montgomery County, Pennsylvania, are investigating one confirmed case of measles in an unvaccinated child ...

Measles is a respiratory disease caused by one of the world’s most contagious viruses. The virus is airborne and spreads ...

The New York City Department of Health said a second measles case has been reported, as an outbreak of the disease continues ...

Measles symptoms resemble other common childhood illnesses, but occur all together. Early symptoms include a relentless cough ...

A highly contagious illness that can cause pneumonia, swelling of the brain, miscarriage, and even death, has been reported ...

Health and Human Services Secretary Robert F. Kennedy Jr. — a prominent vaccine skeptic — is now urging Americans to get ...

An unvaccinated resident in Bergen County contracted measles after returning from a trip overseas. The person spread it to two others, who are also unvaccinated, according to the New Jersey ...

For those who were vaccinated for measles many decades ago, there’s a chance the protection has worn off by now. Here's how ...

Measles was declared eliminated in the United States in 2000 but has since made a comeback which experts attribute to international travel and the rise of anti-vaccine sentiment. It remains to be seen ...

The number of confirmed measles cases in western Texas grew to 146, and it is possibly spreading to the central part of the ...