CHICAGO (CBS)– Pfizer announced its COVID-19 vaccine protects children as young as 12 years old.

For the first time, this could open the door for expanded use of the vaccine in children by the fall.

“The Pfizer-BioNTech COVID-19 vaccine BNT162b2 demonstrated 100% efficacy and robust antibody responses, exceeding those recorded earlier in vaccinated participants aged 16 to 25 years old, and was well tolerated,” Pfizer reported Wednesday morning.

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