Pfizer says its COVID-19 vaccine has 100 percent efficacy in young people
None of the vaccinated 12- to 15-year-olds had symptoms and the shot’s side effects were mild
![vial and syringe containing pfizer covid-19 vaccine](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2021/03/033121_eg_vaccination-young-adults_feat.jpg?fit=1030%2C580&ssl=1)
Vaccinating kids will be essential to ending the pandemic. Pfizer and BioNTech's COVID-19 vaccine is highly effective in 12- to 15-year-olds, the pharmaceutical company announced March 31.
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