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 ...

There seems to be no end to COVID-19, which began in the year 2020. According to research, although the original coronavirus strain no longer exists, a new genetic variant of COVID-19 is emerging ...

Nicknamed 'Stratus,' the XFG strain has been spreading rapidly across several countries in the South-East Asia Region. Despite an uptick in illness, the World Health Organisation considers the overall ...

"As these viruses continue to evolve, public health officials watch carefully to see whether new strains will be more easily ...

As cold and flu season approaches, cases of COVID-19 are still spiking in many parts of the United States. The country has yet to emerge from a late summer COVID wave fueled by the highly contagious ...

Add Yahoo as a preferred source to see more of our stories on Google. A new COVID-19 strain, referred to as NB.1.8.1 or "Nimbus," first appeared in the U.S. sometime near the end of April and is ...

Add Yahoo as a preferred source to see more of our stories on Google. Stratus variants currently account for just over 30% of COVID cases in England. (Getty Images) (Kinga Krzeminska via Getty Images) ...

NEW YORK -- What are the symptoms of omicron? Health experts still don't know if the new variant is causing milder COVID-19, but more indicators are emerging. The World Health Organization's top ...

In fall 2025, rumors spread that the strain of the virus in circulation that causes COVID-19 had "very different signs" compared to other strains of the virus. Referring to it as "COVID-25," people ...