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 ...

In fall 2025, rumors spread that the strain of the virus in circulation that causes COVID-19 had "very different signs" ...

The delta variant has emerged as the dominant strain of the novel coronavirus in the United States, according to updated data from the Centers for Disease Control and Prevention (CDC). The CDC’s ...

Stratus and Nimbus have similar symptoms to previous variants including a fever, cough and runny nose, but the Nimbus variant ...

It should be noted that the emergence of the Delta strain and new more aggressive and possibly lethal variants was anticipated by many scientists. It is simply Darwinian evolution -- survival of the ...