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Effectiveness of BNT162b2 and CoronaVac vaccines against omicron in children aged 5 to 11 years.

Maria Christina L OliveiraMaria Christina L OliveiraAna Cristina Simões E SilvaEnrico A ColosimoRobert H MakMariana A VasconcelosLudmila R SilvaDaniella B MartelliClara C PinhatiHercílio Martelli-Júnior
Published in: World journal of pediatrics : WJP (2023)
For hospitalized children aged 5-11 years during the omicron-predominant period in Brazil, two doses of both vaccines had moderate effectiveness against hospitalization with acute respiratory symptoms and SARS-CoV-2 infection and offered limited protection against endpoints of COVID-19 severity.
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