Health officials are now warning that Missouri is below the 95% vaccination rate needed for herd immunity against measles.

South Africa is losing herd immunity as childhood vaccination rates plunge, with the Health Department warning that measles ...

"[T]he reason why we have seen a measles outbreak in certain parts of the country is because of rampant illegal immigration ...

Two unvaccinated Lancaster County residents died from measles, marking Pennsylvania's first measles deaths in 35 years amid ...

In the late 19th century, Charles Darwin’s principle was twisted into a justification for allowing the poor and infirm to die off.

Health officials in Missouri are urging residents to get vaccinated for measles.

New data from the Centers for Disease Control and Prevention shows more kindergartners across the country are getting ...

Vaccination exemptions are rising in several of the region's school districts, prompting health officials to warn about herd ...

The blue has been ominously spreading west on the map, like an enemy army advancing. The map is the one that the Pennsylvania ...

The number of new measles cases in Ohio slowed down over the past week. Check out the latest numbers from the Ohio Department ...

Learn about the low levels of kindergarten vaccination coverage in Arizona compared to other states in the U.S. and the ...

Geisinger’s director of infectious diseases said Thursday he sees no immediate end to the statewide spike in measles cases and the opening of schools means more infections are likely. Dr. Stanley ...