Omicron has quickly become the dominate COVID strain in the United States.
Viruses with variants aren’t anything new. The COVID-19 variants are a concern because some of them are more contagious, more deadly, and may lead to vaccine failures.
It is large groups of unvaccinated people in which SARS-CoV-2 continues to spread, allowing it to mutate, that is responsible for the variants we are seeing.
The Delta variant is causing SARS-CoV-2 cases to surge, especially in folks who are unvaccinated.