 ZMapp TM, a combination of three chimeric humanmurine monoclonal antibodies against the EBOV surface glycoprotein found on virions and infected cells, is being developed as a treatment for Ebola virus disease. This is a Phase 1a, open-label study to assess the safety and pharmacokinetics of a single intravenous administration of ZMapp tm in healthy adult volunteers. Three subjects will receive a single intravenous dose of 50mgkg infusion and be evaluated on study Days 0, 1, 2, 7, 14, 21, 28, 60, and 90. Samples will be collected for pharmacokinetic and immunogenicity assessments at baseline, during, and following infusion. Subjects will be monitored and assessed for safety and the incidence of adverse events over the course of the study. 