Pfizer and BioNTech said Monday their COVID-19 vaccine remained 100 percent effective in children 12 to 15 years old, four months after the second dose.
source https://www.ndtv.com/world-news/pfizer-vaccine-100-effective-in-adolescents-after-4-months-says-company-2622356
source https://www.ndtv.com/world-news/pfizer-vaccine-100-effective-in-adolescents-after-4-months-says-company-2622356
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