%0 Journal Article %T Implementation of a Randomized, Placebo-Controlled Trial of Live Attenuated Malaria Sporozoite Vaccines in an Indonesian Military Study Population. %A Indrihutami K %A Chand K %A Fahmia R %A Rachmat A %A Rahardjani M %A Wulandari F %A Subekti D %A Noviyanti R %A Sutanto I %A Soebandrio A %A Mallisa NT %A Mardika IM %A Budiman W %A Suriswan I %A Ertanto Y %A Chen MC %A Murshedkar T %A Abebe Y %A James ER %A Billingsley PF %A Sim BKL %A Hoffman SL %A Richie TL %A Chen S %A Elyazar IRF %A Ekawati LL %A Baird JK %A Nelwan EJ %J Am J Trop Med Hyg %V 110 %N 5 %D 2024 May 1 %M 38531102 %F 3.707 %R 10.4269/ajtmh.23-0597 %X Malaria eradication efforts prioritize safe and efficient vaccination strategies, although none with high-level efficacy against malaria infection are yet available. Among several vaccine candidates, Sanaria® PfSPZ Vaccine and Sanaria PfSPZ-CVac are, respectively, live radiation- and chemo-attenuated sporozoite vaccines designed to prevent infection with Plasmodium falciparum, the leading cause of malaria-related morbidity and mortality. We are conducting a randomized normal saline placebo-controlled trial called IDSPZV1 that will analyze the safety, tolerability, immunogenicity, and efficacy of PfSPZ Vaccine and PfSPZ-CVac administered pre-deployment to malaria-naive Indonesian soldiers assigned to temporary duties in a high malaria transmission area. We describe the manifold challenges of enrolling and immunizing 345 soldier participants at their home base in western Indonesia before their nearly 6,000-km voyage to eastern Indonesia, where they are being monitored for incident P. falciparum and Plasmodium vivax malaria cases during 9 months of exposure. The unique regulatory, ethical, and operational complexities of this trial demonstrate the importance of thorough planning, frequent communication, and close follow-up with stakeholders. Effective engagement with the military community and the ability to adapt to unanticipated events have proven key to the success of this trial.