A contagious new COVID-19 variant called NB.1.8.1, aka "Nimbus," is now dominant in the United States, CDC data show. What to ...

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A new COVID-19 variant is spreading rapidly through the U.S. What to know about NB.1.8.1 and its symptoms in Tennessee.

Variant NB.1.8.1 accounted for 0% of U.S. cases in April. By mid-June, it was estimated to be the cause of around 37% of ...

Globally, 22 countries have now reported its presence, including major spikes in India, Singapore, Hong Kong, and ...

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How was the Nimbus COVID variant first detected in the United States? It’s summer! That time of the year when you’re planning ...