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.
· Vaccine · 0 citations