Vaxx Facts: Why two doses are needed for mRNA vaccines

In the kickoff of our new video series “Vaxx Facts,” Pat Winokur, MD, executive dean for the Carver College of Medicine and principal investigator for UI Health Care’s Pfizer-BioNTech COVID-19 vaccine clinical trial, explains why two doses of the mRNA vaccines (like Moderna and Pfizer-BioNTech) are necessary.

Read more about the first authorized single dose vaccine here.