Add Yahoo as a preferred source to see more of our stories on Google. FILE - This 2020 electron microscope image made available by the National Institute of Allergy and Infectious Diseases shows a ...

Businesses across Colorado are still feeling the effects of the surge in COVID-19 cases driven by the highly contagious omicron variant even as the rate of infection appears to be slowing. For many of ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. The coronavirus mutant widely known as ...