U.S. FDA intends to put its most serious warning on COVID vaccines, CNN sources say CTV NewsFDA intends to put its most serious warning on Covid vaccines, sources say CNNFDA to update regulations after unconfirmed claims of Covid vaccine-linked death The GuardianF.D.A. Expands Covid Vaccine Inquiry to Adult Deaths The New York TimesFDA Plans to Put Black Box Warning on Covid-19 Vaccines: CNN Bloomberg.com
