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South Korean scientists say the effectiveness of the Pfizer COVID-19 jab in teens wanes after a month, but it continues to protect against severe disease. They looked at data for more than 3 million teens, and found two doses of Pfizer were 75.5% effective in preventing infection in people aged 18, 80.4% effective among those aged 16-17, and 79.2% effective among those aged 12 to 15, shortly after their second dose. However, the vaccine's effectiveness in preventing infection had waned a month later. although it continued to protect against severe disease, the scientists say. They conclude that teens should have booster vaccinations for continued protection.
From:
Estimated Long-Term Effectiveness Among Adolescents of Pfizer-BioNTech COVID-19 Vaccine
About The Study: Researchers estimated the long-term effectiveness associated with the Pfizer-BioNTech COVID-19 vaccine against SARS-CoV-2 infection and critical infection among 3.2 million adolescents in South Korea.
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