
Dear Doctors: The new COVID-19 boosters are here, and I’m not sure if, or when, I need to get one. I had the two-shot Moderna series last winter. I had a mild case of COVID-19 this summer. When I got better, I got the booster. Do I still need to get another one?
Dear Reader: When an altered version of an original virus becomes successful enough to spread widely, it’s known as a variant. With the emergence of the omicron variant, the original coronavirus vaccine needed a tweak.