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, ...

Differing strains of the coronavirus continue to appear around the world and a new COVID-19 variant, the so-called "Delta" variant, has health experts concerned. The variant, otherwise known as B.1617 ...

The variant of the COVID-19 virus that was first found in India and is now dubbed delta has become the dominant strain in some areas, and could become the primary variation in the U.S. the World ...

With holiday gatherings and New Year's celebrations in the rearview mirror, many Americans are coming down with respiratory viruses and may be wondering what their symptoms mean. After its initial ...