The United States Food and Drug Administration has ordered Pfizer and Moderna to expand their warning labels on COVID-19 vaccines.

In a significant shift, more Americans now believe COVID-19 vaccines may have caused heart problems in some patients, a sign ...

The funding was meant to help the U.S. prepare for pandemics triggered by avian flu strains, but now leaves the future of ...

Trump HHS ends nearly $1 billion in funding to Moderna for mRNA bird flu vaccines, citing safety concerns and lack of ...