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561K views · 8.2K reactions | Pfizer releases trial results testing the safety of its Covid-19 vaccine for children ages 5-11. These are the first such results released for a US Covid-19 vaccine in this age group. The trial, which included 2,268 participants used a two-dose regimen of the vaccine administered 21 days apart, CNN's Sanjay Gupta reports. | CNN | Facebook
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