Add Yahoo as a preferred source to see more of our stories on Google. As measles has spread across the United States, the overwhelming majority of cases have been among unvaccinated people or those ...

CHICAGO — Thousands of fully vaccinated people have contracted the coronavirus, but experts say these breakthrough cases are rare. “The total number of individuals who are vaccine breakthroughs is ...

Sheri Houghland was one of the first in the state to get vaccinated. As a healthcare worker, she was able to get the shot back in November. It was a relief after months of pandemic-related stress. And ...

Add Yahoo as a preferred source to see more of our stories on Google. A dose of the measles vaccine at a health center in Lubbock, Texas, on Feb. 27. More than 800 people in the U.S. have had measles ...

With the more contagious delta variant strain of COVID-19 spreading throughout the country, hospitalizations and deaths from the virus are on the rise. According to the Centers for Disease Control and ...

A tenth measles case was identified in Shasta County, which the California public health officials called a "breakthrough case." A press release from the Health and Human Services agency said "the ...