A nurse administers a pediatric dose of the Covid-19 vaccine to a girl at a L.A. Care Health Plan vaccination clinic at Los Angeles Mission College in the Sylmar neighborhood in Los Angeles on Jan. 19. Robyn Beck/AFP via Getty Images hide caption
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Kids vaccine
Pfizer-BioNTech's COVID-19 vaccine for young children is a lower-dose formulation of the companies' adult vaccine. It was found to be safe and nearly 91% effective at preventing COVID-19. Paul Hennessy/SOPA Images/LightRocket via Getty hide caption