Fredi Alexander Díaz-Quijano

Effectiveness of COVID-19 vaccination schedules against severe COVID-19 in children aged 6 months to 4 years in Brazil: A population-based cohort study (2023–2024)

ABSTRACT Background Although the impact of COVID-19 vaccination is widely documented in the general population, the evidence on its effectiveness in children under 5 years of age is still limited. In this context, the continuation of vaccination programs in this age group has bee...