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Add Yahoo as a preferred source to see more of our stories on Google. A new COVID variant is on the rise amid a nationwide summer surge of cases and it's on track to become the third most common ...

COVID-19 cases are climbing across the United States this summer, and experts are pointing to a new strain — the "Stratus" variant, officially known as variant XFG — as a major factor in the increase.

As states grappled with confusion around vaccines, COVID-19 cases have continued to fluctuate nationwide. Some regions of the United States are experiencing "very high" COVID viral activity, according ...

COVID-19 cases remained relatively steady week-over-week in late August, though data from states showed "very high" viral activity at the end of the month, according to the Centers for Disease Control ...

As the respiratory illness season begins, COVID cases have remained relatively under control in the United States into the beginning of fall. While the United States by and large is experiencing ...

New COVID-19 variant XFG has firmly positioned itself as the predominant strain in the United States as cases continue to crop up nationwide. Some regions of the U.S. are experiencing higher rates of ...