WEB EXTRA CDC Director Discusses COVID Vaccine Second Dose Time Frame And If Vaccines Are Interchangeable
WEB EXTRA CDC Director Discusses COVID Vaccine Second Dose Time Frame And If Vaccines Are Interchangeable

What if you can't get the second dose within the recommended time frame, and are the Pfizer and Moderna vaccines interchangeable?

The director of the Centers for Disease Control and Prevention, Dr. Rochelle Walensky, explains the CDC's guidance.