The development of a transmission-blocking vaccine (TBV) against malaria is hampered by poor understanding of functional antibody responses. In this issue of Immunity, Fabra-Garcia et al., Ivanochko et al., and Tang et al. isolate human monoclonal antibodies against the two most promising TBV candidates, Pfs48/45 and Pfs230, and map the epitopes responsible for potent transmission-reducing activity.
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