The virus behind COVID-19 is mutating and immune-evasive. Here’s what that means
As COVID-19 approaches its fourth year, Omicron continues to mutate and become more immune-evasive, health officials say. In December, the World Health Organization said variants descending from Omicron show more capacity to escape our immune system. "Omicron, the latest variant of concern, is the most transmissible variant we have seen so far, including all the sub-variants that [...]