Scroll through the chart below to see which side effects ... Clinical trials suggest the vaccine is 66% effective at preventing COVID-19. Pfizer's and Moderna's vaccines are each more than 90% ...

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

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

The Biden-Harris administration often issued recommendations related to the COVID pandemic that turned out to be false.

"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 ...