Pfizer Covid-19 Vaccine 100% Effective in Study of 12- to 15-Year-Olds, Company Says

Pfizer Covid-19 Vaccine 100% Effective in Study of 12- to 15-Year-Olds, Company Says

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The Covid-19 vaccine from Pfizer and BioNTech safely protects kids 12 years and older, the companies said, results likely to lead to...

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