"Several key indicators are showing decreasing levels of activity nationally," the agency said Friday in its weekly respiratory viruses report.
"New data from CDC show that the updated COVID-19 vaccines were effective against COVID-19 during September 2023 - January 2024, including against variants from the XBB lineage, which is included in the updated vaccine, and JN.1, a new variant that has become dominant in recent weeks," the CDC said in a post on Thursday.
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