WASHINGTON, D.C. (CBS News) — The Food and Drug Administration has expanded the emergency use authorization for the Pfizer COVID-19 vaccine to children aged 12 to 15, meaning access for millions more adolescents.

The Pfizer vaccine is so far still the only one approved for use in 16-to-18 year olds.

The emergency use authorization had been expected. An analysis that included 1,005 vaccine participants in this age group found the vaccine was 100% effective in preventing COVID-19.

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