We keep hearing about variants of the COVID-19 virus. That can be worrisome and stressful. But don't stress too much.
1. Vaccines work, even against troublesome variants
2. The immune response is robust
3. When vaccinated people do get infected, the shots protect against the worst outcomes
4. The same mutations keep popping up
5. If the effectiveness of the vaccines begins to wane, we can make booster shots.
(TechReview) Photo: Getty/Gilnature