Pfizer announced that their vaccine is “96% effective.”
Pfizer Inc and German partner BioNTech SE on Thursday said data from a Phase III trial demonstrated high efficacy of a booster dose of their COVID-19 vaccine against the virus, including the Delta variant.
They said a trial of 10,000 participants aged 16 or older showed 95.6% effectiveness against the diseases, during a period when the Delta strain was prevalent.
The study also found that the booster shot had a favorable safety profile.
Pfizer had claimed initially its first vaccine was 95% effective.
It continued to slip.
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