Prophylactic Efficacy of CD388, a Novel Drug–Fc Conjugate, in a Human Influenza A/H3N2 Virus Challenge Model: A Randomized, Controlled Phase 2a Study

CD388 was well-tolerated and demonstrated prophylactic activity against RT-qPCR-confirmed influenza infection in a human challenge study. The efficacy of CD388 in preventing influenza will be confirmed in larger studies. Clinical Trials Registration. ClinicalTrials.gov identifier: NCT05523089.