Author

F. A. Diaz-Quijano

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Open access Aug 2026

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).

In this population-based cohort, completion of the 3-dose BNT162b2 primary series was associated with substantially lower rates of COVID-19-attributed SARI among children aged 6 months to 4 years.

I. N. Schrarstzhaupt, F. A. Diaz-Quijano · Vaccine · 0 citations

Jul 2026

Classification of scenarios based on the determinants of childhood vaccination coverage in Brazil

Multiple socioeconomic, structural and operational factors were associated with unvaccinated rates, highlighting the relevance of healthcare service organization even in favorable social contexts and classifying municipalities into risk profiles may help guide interventions to improve coverage.

I. N. Schrarstzhaupt, F. A. Diaz-Quijano, F. Fontana Sutile Tardetti Fantinato et al. · medRxiv · 0 citations