The measles outbreak has already spread to three states and triggered more than 500 cases. But it could keep growing for ...

An 8-year-old girl has died of measles in Texas. The patient was unvaccinated and had no underlying health issues, the ...

Immunization programs nationwide have been left brittle by years of stagnant funding by federal, state and local governments.

A second child in Texas has died of measles, according to the Texas Department of State Health Services, in a growing ...

Canada has reported more than 730 cases this year, making this one of the worst measles outbreaks in the country since it declared the virus “eliminated” in 1998. Mexico has seen at least 360 measles ...

Before the vaccine, the virus spread in a world very different from today’s.

Here's what to know about whooping cough amid the growing cases.

As measles outbreaks popped up across the U.S. this winter, pediatricians waited for the nation's public health agency to ...