A new COVID variant has been reported in China, which could lead to another round of COVID booster shots in America.

Less than 20 cases of the new COVID-19 variant, NB.1.8.1, had been reported in the U.S., as of Tuesday, May 27.

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A new Covid variant spreading around the U.S. may come with an incredibly unfortunate symptom now commonly referred to as “razor blade throat.” NB.1.8.1, which is also known as or “Nimbus,” is now ...

HONG KONG -- China is facing its worst COVID crisis since early 2020, when the world first witnessed an entire population locked down to contain the coronavirus in Wuhan and its surrounding province.

Add Yahoo as a preferred source to see more of our stories on Google. Some people in China are reporting severe sore throat with COVID infections right now. apomares via Getty Images A positive ...

Covid-19 was never just another cold. We knew it was going to stick around and keep changing to try to get the upper hand on our immune systems. But we've changed, too. Our B cells and T cells, ...