(CBS4) - A new COVID-19 variant -- omicron -- has some experts worried it could be more transmissible and more resistant to vaccines than previous variants of the virus. So just how did the virus get ...

Every virus mutates; it’s part of the virus life cycle. Those shifts and changes aren’t always a big deal. The new coronavirus is an RNA virus: a collection of genetic material packed inside a protein ...

As the U.S. faces down the COVID-19 Delta variant – now fast-becoming the nation's dominant strain – reports of a new Lambda variant that first emerged in Peru in August 2020 are gaining the attention ...

No, viruses do not always weaken with mutations. Sometimes mutations can lead to a strain that's more transmissible or capable of causing more disease. "When a virus enters a human cell they replicate ...

There’s been a lot of talk about new variants of the virus emerging, like the potentially more contagious variant spreading in the United Kingdom and recently found in the United States. There’s lots ...