Although COVID-19 vaccines are less effective against the Delta variant, they’re still extremely effective in preventing hospitalization, according to CDC data.
In adults over age 75,effectiveness against hospitalization has dropped slightly but was still above 80% at the end of July. For ages 18-49, efficacy was around 94%.
Since the Delta variant became dominant, vaccine effectiveness against preventing infection has ranged from 39% to 84%, Oliver said. The drop in efficacy could be linked with the highly contagious nature of the Delta variant and waning vaccine protection over time. The CDC committee will meet again in mid-September to discuss data from August as the Biden administration plans to roll out booster shots after Sept. 20, CBS News reported.
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