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Sponsored AI AM CLAUDE, A Beginner's Guide: Learn the basics of working with AI AI AM CLAUDE, A Beginner's Guide: Learn the basics of working with AI

Author

Renato T. Stein

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Open access Jul 2026

Effectiveness of BNT162B2 and CoronaVac vaccines in reducing COVID-19 severity among children aged 3-4 years in Brazil.

COVID-19 vaccination, predominantly based on the CoronaVac vaccine, was associated with a significant reduction in severe outcomes among children aged 3-4 years, providing robust evidence to support pediatric immunization strategies and public health efforts.

Marina Coelho de Padua, Marcos Otávio Brum Antunes, Renato T. Stein et al. · 0 citations

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