Pfizer and BioNTech said their Covid-19 vaccine was effective as a booster against the Omicron variant in children ages 5 to 11
Children under five in the U.S. aren’t yet eligible for a Covid-19 vaccine after efforts to get the shots to market have hit setbacks. WSJ’s Peter Loftus explains what we know about the vaccines and when they might become available. Photo composite: Todd JohnsonA booster dose of the Covid-19 vaccine from Pfizer Inc. and BioNTech SE generated a strong immune response in children 5 to 11 years old, an encouraging sign for youngsters to maintain protection against the virus.
The companies said Thursday that a late-stage study of a booster found the extra shot significantly increased antibody levels against the Omicron variant. The shot also raised antibody supply against the initial strain the vaccines were designed to fight.
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