You are using an older browser version. Please use a supported version for the best MSN experience.

Dr. Natalie Azar explains why the 2nd vaccination is so important

NBC News medical contributors Dr. Vin Gupta and Dr. Natalie Azar join TODAY to answer pressing questions about the coronavirus, including whether we will need to wear masks after receiving vaccinations and what happens if you’re unable to get your second shot exactly three weeks later.

UP NEXT

UP NEXT

image beaconimage beaconimage beacon