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  2. NIH says about 75% of US adults are at risk of severe COVID-19. Check your risk status. Try our COVID-19 questionnaire built by medical professionals

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  2. Sep 1, 2023 · New variants are an expected part of the evolution of viruses, and that includes SARS CoV-2, the virus that causes COVID-19. Yale Medicine provides some background on key variants that have surfaced during the course of the pandemic.

  3. Apr 8, 2022 · A variant of concern has been observed to be more infectious, and is more likely to cause breakthrough infections or reinfections in those who are vaccinated or previously infected. These variants are more likely to cause severe disease, evade diagnostic tests, or resist antiviral treatment.

  4. Nov 4, 2023 · Omicron. The main variant in the United States is omicron. This variant spreads more easily than the original virus that causes COVID-19 and the delta variant. But omicron seems to cause less severe disease. Omicron has a few major offshoots, also called sublineages.

  5. Dec 27, 2023 · Right now, two variants, JN.1 and HV.1, comprise more than half of Covid cases in the United States. JN.1 accounted for 44 percent of cases as of late December, according to the Centers for...

  6. 3 days ago · Experts are closely watching KP.2, now the leading variant. By Dani Blum For most of this year, the JN.1 variant of the coronavirus accounted for an overwhelming majority of Covid cases. But now ...

  7. Jun 14, 2022 · Two new subvariants, BA.4 and BA.5, have been gaining ground in the United States. During the week ending June 11, the two subvariants accounted for 21.6 percent of cases in the country, up from...

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    related to: are the new variants more infectious or deadly coronavirus
  2. NIH says about 75% of US adults are at risk of severe COVID-19. Check your risk status. Try our COVID-19 questionnaire built by medical professionals

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