XFG, dubbed “American COVID,” is spreading globally, with reports linking the variant to a distinctive hoarse or croaky voice ...

Sometimes referred to as ‘Stratus’ or the ‘American strain’, the variant first identified in January 2025 has since spread worldwide ...

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 fast-spreading delta variant of the coronavirus has been gaining traction worldwide since it was first detected in India. It’s a version of the coronavirus that has been found in more than 80 ...

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 ...

The Delta variant is expected to eclipse the Alpha variant in the next couple weeks, which worries health officials, said Rochelle Walensky, director of the Centers for Disease Control and Prevention.