In another sign of growing scrutiny over Covid-19 vaccines, the Food and Drug Administration has asked the two makers of mRNA ...

Government vaccine advisers are meeting to decide if the recipe for COVID-19 vaccines needs updating for this fall and winter ...

FDA now requires Pfizer and Moderna COVID-19 vaccines to carry expanded warning labels about risks of myocarditis and pericarditis ...

Moderna isn’t giving up on the combo shot entirely—it plans to resubmit later this year after it collects more data from its ...