A new COVID-19 variant, known as XFG or “Stratus,” is surging across the United States, swiftly becoming the third-most ...

According to the Centers for Disease Control and Prevention, the strain is now the third most common COVID-19 variant in the United States.

Variant XFG, colloquially known as "Stratus," was first detected in Southeast Asia in January but accounted for less than ...

Beach trips and heat waves aren’t the only things rising this summer. COVID-19 signals are climbing nationwide, and two ...