ABSTRACT.
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These authors contributed equally to this work.Financial support: This work was supported by a public–private partnership, the Disclosures: Sanaria Inc. manufactured PfSPZ Vaccine, and Protein Potential LLC is affiliated with Sanaria. Sanaria was the sponsor of the clinical trial. L. W. P. C., N. K, E. R. J., Y. A., T. M., P. F. B., B. K. L. S., T. L. R., and S. L. H. are salaried, full-time employees of Sanaria Inc., the developer and sponsor of Sanaria PfSPZ Vaccine. S. R. M., T. C. S., P. R., and E. S. were salaried, full-time employees of Sanaria Inc. at the time the trial was conducted. Thus, all authors associated with Sanaria or Protein Potential have potential conflicts of interest.Authors’ addresses: Said A. Jongo, Ally Olotu, Ali Mtoro, Ali Hamad, Elizabeth Nyakarungu, Mwajuma Chemba, Kamaka K. Ramadhani, Linda Gondwe, and Salim Abdulla, Ifakara Health Institute, Bagamoyo Research and Training Centre, Bagamoyo, Tanzania, E-mails: The radiation-attenuated 
