FDA Authorizes Second Vaccine Booster for Those 50 and Older

The U.S. Food and Drug Administration has authorized a fourth dose of the Pfizer and Moderna COVID-19 vaccines for people 50 and over. Previously a fourth dose was only authorized for people 12 and up, who are badly immunocompromised. The U.S. Centers for Disease Prevention and Control will not weigh in on how to implement […]