https://apnews.com/a46e8e55156c704a28af9ed9c238fd2b

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.