U.S. health officials may soon recommend COVID-19 booster shots for fully vaccinated Americans. A look at what we know about boosters and how they could help fight the coronavirus:
WHY MIGHT WE NEED BOOSTERS?
It’s common for protection from vaccines to decrease over time. A tetanus booster, for example, is recommended every 10 years.
Researchers and health officials have been monitoring the real-world performance of the COVID-19 vaccines to see how long protection lasts among vaccinated people. The vaccines authorized in the U.S. continue to offer very strong protection against severe disease and death.