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.

U.S. health officials knew about the risks of myocarditis from COVID-19 vaccines but downplayed the concern and delayed informing the public about the risks of taking the jab, according to a new Senate report released by Sen.

This week, mRNA vaccines are set to face intense scrutiny from critics in Congress. Here's an explainer of how we know they are safe and effective.

The FDA is requiring COVID vaccine makers Pfizer and Moderna to update their warnings about the possible risk of myocarditis and pericarditis.

The FDA will narrow its approval for updated coronavirus vaccines, marking a significant shift in the agency’s approach to green-lighting shots that have been recommended broadly to the public.

Under a new policy announced Tuesday by the Trump administration, only people age 65 and older and children or young adults with certain health conditions that puts them at risk will be approved for the shot.

Since the COVID-19 pandemic, there has been a decline in U.S. vaccine uptake, while widespread misinformation and distrust make it challenging to craft effective public health responses.