A Covid-19 particle is pictured in this image provided by the Centers for Disease Control and Prevention. Photo: CDC/TNS
Explainer |
Why more contagious Covid-19 variants are emerging
- Coronavirus mutations emerged as case numbers soared worldwide and as the virus responded to immunity that started to build up in the population
- The best way to protect against current variants and prevent new ones is to reduce cases through ongoing control measures and vaccination
A Covid-19 particle is pictured in this image provided by the Centers for Disease Control and Prevention. Photo: CDC/TNS
