A cohort study of the duration of immunity to yellow fever after 4 years of primary vaccination in children and adults

Puntos clave

• This study aims to evaluate how long immunity lasts after the yellow fever vaccine in different age groups.
• Cohort study design involving both children and adults
• Assessment of immunity duration four years post-primary vaccination
• Analysis of immune response to determine need for revaccination
• Evidence indicates waning immunity after one dose of yellow fever vaccine
• Findings support the need for revaccination, particularly in infants and toddlers
• Implications highlighted for vaccination policies in endemic regions

Resumen