Browse By Topic Vaccines

Does exposure to SARS-CoV-2 produce immunological memory? If so, how long do those “memories” last, and what are the implications on the development and longevity of vaccine-induced protection?

Two COVID-19 vaccines have received emergency use authorization (EUA) in the U.S. But open questions remain, including the durability of immunity and how to predict rare, severe adverse reactions.

Emerging data from Phase 3 vaccine studies may be the most pivotal advancement to date in the fight against COVID-19. We take a look at what we do and don’t know about the vaccine candidates, and the road ahead.