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The Guardian - US
The Guardian - US
World
Maya Yang in New York

Pfizer vaccine significantly less effective in children ages five to 11, study shows

Pfizer New York
In the last week of January, vaccine effectiveness against hospitalization among 12-year-olds was 67% – but just 11% for 11-year-olds.
In the last week of January, vaccine effectiveness against hospitalization among 12-year-olds was 67% – but just 11% for 11-year-olds. Photograph: Hannibal Hanschke/AFP/Getty Images

The Pfizer/BioNTech Covid-19 vaccine is less effective in children aged five to 11 than in adolescents and adults, according to new data from New York state health officials.

The new research was announced shortly after federal authorities relaxed masking guidance and a day after Eric Adams, the mayor of New York, said he would probably follow Governor Kathy Hochul in ending a mask mandate in city schools.

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