Infectious disease experts say mRNA vaccines have been studied for decades, they are safe and effective, and were instrumental in saving lives during the COVID pandemic.

Every year, the race begins anew. Scientists scramble to track mutating viruses, pharmaceutical companies reformulate ...

Historically, almost everyone has been eligible for Covid vaccines; the C.D.C. recommended the most recent vaccine for all ...

This week, two new leaders at the US Food and Drug Administration announced plans to limit access to covid vaccines, arguing ...