Long-term immunity against yellow fever in children vaccinated during infancy: a longitudinal cohort study

Christina Domingo, Juliane Fraissinet, Patrick O. Ansah, Corey Kelly, Niranjan Bhat, Samba O. Sow & José E. Mejia
Background: A single dose of vaccine against yellow fever is routinely administered to infants aged 9–12 months under the Expanded Programme on Immunization, but the long-term outcome of vaccination in this age group is unknown. We aimed to evaluate the long-term persistence of neutralising antibodies to yellow fever virus following routine vaccination in infancy. Methods: We did a longitudinal cohort study, using a microneutralisation assay to measure protective antibodies against yellow fever in Malian and...
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