It's been less than a month since health officials reported the first known case of a new and more contagious coronavirus variant in Texas. The man, a Harris County resident, had no travel history.

Here’s what the Centers for Disease Control and Prevention (CDC) says about the Delta variant, its symptoms, characteristics and other things to watch for: Viruses constantly change through mutation, ...

Flu and Covid, including a new variant called BA.3.2, nicknamed “cicada,” are still circulating, along with several other respiratory illnesses and a nasty stomach bug.

One thing we know for sure about SARS-CoV-2, the virus that causes COVID-19, is that it keeps changing. Since the start of the pandemic, we have seen several notable variants, including Alpha, Beta, ...

A new paper in Genome Biology and Evolution, indicates that while the COVID-19 virus has developed rapidly since 2019, it has done so within limited genetic channels. These genetic limits have ...