A guide to coronavirus vaccination rollout and what you need to know about the authorized vaccines. Some 63.8% of Americans have received both doses of the two-shot Pfizer-BioNTech and Moderna drugs ...

WASHINGTON (AP) — The Food and Drug Administration said Wednesday it has expanded existing warnings on the two leading COVID-19 vaccines about a rare heart side effect mainly seen in young men.

Add Yahoo as a preferred source to see more of our stories on Google. People 6 months old and older should update their COVID-19 and flu shots this fall, the Centers for Disease Control and Prevention ...

At the onset of the COVID–19 pandemic, it became clear that there was a need for quality, up-to-date data about the spread of the virus. UC Santa Cruz turned to Institutional Research, Assessment and ...