Does This Translate to 100% Real-World Effectiveness?
The clinical trial had a relatively small sample size2,228 participantswhere about half were given the vaccine.
All 30 cases of COVID-19 were from the placebo group, exhibiting 100% efficacy.
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However, the efficacy measured in clinical trials generally differs from the vaccine effectiveness in real-world controls.
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Will Adolescents Need Boosters?
We will need to see a decline in efficacy in this group to say for sure, Storey said.
It is possible boosters will not be required, or may not be required for several months.
We will continue to learn more about real-world vaccine effectiveness as more adolescents get vaccinated against COVID-19.
For the most recent updates on COVID-19, visit ourcoronavirus news page.
Pfizer.Pfizer-BioNTech Announce Positive Topline Results Of Pivotal COVID-19 Vaccine Study In Adolescents.
World Health Organization.Vaccine efficacy, effectiveness and protection.
Centers for Disease Control and Prevention.CDC Expands COVID-19 Booster Recommendations.
