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CDC says new COVID vaccine is 54% effective at preventing symptomatic infections

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  • Staff Report 

The Centers for Disease Control and Prevention (CDC) has revealed that the updated COVID-19 vaccines are 54% effective in preventing symptomatic infections in adults. These newer vaccines, introduced to counter recent coronavirus variants, have shown promising protection levels since their rollout last year. The CDC’s findings, based on a study observing 9,000 individuals tested for COVID-19 at select pharmacies, underscore the vaccine’s efficacy against the JN.1 variant and other prevalent strains.


In a significant health update, the CDC emphasized the crucial role of the latest COVID-19 vaccinations in combating the spread of the virus. The study, conducted from mid-September 2023 to January 2024, highlights the vaccine’s ability to generate neutralizing antibodies, particularly against the emerging XBB lineages and the now-dominant JN.1 variant. These results lay the groundwork for further research on the vaccine’s long-term effectiveness and its impact on severe disease prevention.

The CDC’s announcement comes as a call to action for increased vaccination coverage among Americans. Despite the demonstrated benefits, uptake of the updated vaccines remains low, with only 22% of adults and 11% of children in the U.S. having received their shots. The CDC continues to recommend vaccination for everyone aged six months and older, urging the public to protect themselves against COVID-19 and its evolving variants.



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