While everyone needs two shots, the vaccine was 50 percent effective after the first dose, and 95 percent effective after the second. » Subscribe to NBC News: http://nbcnews.to/SubscribeToNBC » Watch…
U.K. issues allergy warning for Pfizer’s Covid vaccine, Covid cases rising as U.S. begins to see Thanksgiving spike, and what to know about shipping deadlines as online holiday shopping surges.…
The U.K.’s medical regulatory authority issued new guidance that people who have experienced serious allergic reactions should not take the shots after two people with that history who received the…