The current COVID-19 vaccine is 33% effective at preventing emergency department or urgent care visits among adults of all ages. It also is 45% to 46% effective at preventing hospitalizations in older ...

After speculation as to whether this year’s flu vaccine could be poorly matched to the current strain of flu, new Centers for ...

“Findings in this report show that vaccination with the 2024–2025 influenza vaccine reduced the likelihood of medically attended influenza and support CDC’s recommendation that all persons aged ≥6 ...

For a community to be protected against contagious diseases, enough residents need to be vaccinated to provide “herd immunity ...

Measles is one of the most contagious diseases in the world. Doctors explain how to know if you need a booster during this ...

So far, fewer than half of US children and older adults have been vaccinated during this year’s high-severity flu season.

The vaccine is the only way to prevent measles, but it also prevents other illnesses. The other “M” stands for mumps, and the ...

"Vaccination provided protection for infections caused by JN.1 and infections caused by XBB-related lineages. Waning of effectiveness is expected with additional elapsed time since vaccination ...

As he is poised for a full Senate vote in the days to come, CNN looked at the origins and prevention effectiveness for just one of the vaccines that Kennedy has repeatedly questioned in the past ...