Declining Antibody Affinity Over Time After Human Vaccination With a Plasmodium falciparum Merozoite Vaccine Candidate.

Persson, Kristina E M; Horton, Jessica L; Kurtovic, Liriye; McCarthy, James S; Anders, Robin F; Beeson, James G · J Infect Dis · 2024

case_series · Level IV

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Abstract

Maintaining high-affinity antibodies after vaccination may be important for long-lasting immunity to malaria, but data on induction and kinetics of affinity is lacking. In a phase 1 malaria vaccine trial, antibody affinity increased following a second vaccination but declined substantially over 12 months, suggesting poor maintenance of high-affinity antibodies. Australian New Zealand Clinical Trials Registry ACTRN12607000552482.

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