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BA.5 is now the dominant omicron strain in the U.S. It's good at evading the immune system, though doesn't appear to cause more serious illness.
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With the BA.2 subvariant of omicron pushing infection rates up, many are reaching for at-home rapid tests. Here's what experts say on how best to use them.
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The CDC reported that the variant accounted for about 35% of new infections last week.
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The omicron BA.2 variant spreads about 30% more easily and has caused surges in other countries. Its steady increase in the U.S. raises questions about the wisdom of rolling back COVID restrictions.
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The U.S. also surpassed 50 million COVID-19 cases, the most in the world. Two experts who raised early warnings discuss how the losses continue to deepen, despite the arrival of vaccines a year ago.
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You might want to cancel that holiday party, and definitely dust off your face mask. Don't panic, but do step up your precautions. Here's how.
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How did this new strain of the coronavirus evolve? Researchers are investigating various possibilities. One leading theory involves ... just one person.
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The World Health Organization deemed it a variant of concern, and the U.S. is banning travel from parts of Africa where it's spreading. Here's what scientists know and what they're trying to learn.
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A new coronavirus variant, first discovered in South Africa, has begun to spread around the globe. Vaccine producers say they're working to get ahead of the new strain.
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Stock markets around the world tumbled on concerns about the new variant. While it's too soon to tell exactly how the variant functions, virologists are rushing to learn more.
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Despite a wide variety of challenges from job loss to distrust of the establishment, the success the Hispanic community has seen could help other communities tackle vaccine hesitancy.
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As the delta variant causes more vaccinated people to get "breakthrough infections," concerns are rising that even the vaccinated could develop long COVID symptoms in rare cases.