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  2. 5 days ago · They want to understand whether the variants: Change the effectiveness of COVID-19 vaccines. Cause milder or more severe disease in people. Spread more easily from person-to-person. Are detected by currently available viral tests. Respond to medicines currently being used to treat people for COVID-19.

  3. 3 days ago · Health-care workers received the first doses of the COVID-19 vaccine in December 2020. A study by researchers at Washington University School of Medicine in St. Louis has found that repeat vaccination with updated versions of the COVID-19 vaccine promotes the development of antibodies that neutralize a wide range of variants of the virus that causes […]

  4. 3 days ago · A few days ago, the FDA told drugmakers to update the fall COVID-19 vaccine formula to target the KP.2 strain if possible to create a more effective vaccine for the fall. This change in the ...

  5. 5 days ago · A summertime wave of COVID-19 infections is arriving earlier than last year across a growing share of the country, federal data suggests, as a new variant called LB.1 could be on track to...

  6. 1 day ago · The FLiRT variants, KP.3, KP.2, and KP.1, make up more than 60-percent of new COVID cases in the U.S. right now, rapidly pushing out the last dominant variant, JN.1. "It’s thought that maybe ...

  7. 5 days ago · With a two-week period ending on June 22, the CDC Nowcast data tracker is reporting that KP.3 positive cases are at 33.1%. Positive cases for the COVID-19 KP.3 variant are rising, according to ...

  8. 2 days ago · Federal health officials say U.S. adults 65 and older who got a shot of the updated COVID-19 vaccine in the fall should get a booster dose now, if at least four months have passed. Feb. 28, 2024

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