
SARS-CoV-2, like other RNA viruses, constantly changes through mutation, with new variants occurring over time. Generally, when new variants become more common, they do so because of some selective advantage to the virus. Among the numerous SARS-CoV-2 variants that have been detected, only a very small proportion are of public health concern because they are more transmissible, cause more severe illness, or can elude the immune response that develops following infection and possibly from vaccination...
Like
Save
Share