Rabies Clinical Trial
Official title:
Effect of Antimalarial Drugs on the Immune Response to Rabies Vaccine for Post-exposure Prophylaxis. A Randomized, Open Label, Trial in Healthy US Adults Age 18-60 Years
This is an exploratory trial to evaluate the effect of antimalarial drugs on the immune response generated by rabies vaccine when administered for post-exposure prophylaxis. This study will use the FDA approved post-exposure prophylaxis vaccine regimen (without rabies immune globulin) in the presence or absence of an FDA-approved malaria chemoprophylaxis regimen.
Rabies is present on all continents where U.S. military personnel deploy, including countries where malaria is also endemic and where U.S. military personnel are required to take malaria prophylaxis. Rabies post-exposure prophylaxis in unvaccinated individuals who are not on malaria prophylaxis consists of four, 1.0-mL intramuscular (IM) injections of the purified chick embryo cell (PCECV) rabies vaccine on days 0, 3, 7, and 14. The current Advisory Committee on Immunization Practices (ACIP) guidelines recommend that exposed persons who are taking malaria prophylaxis should receive a fifth dose of rabies vaccine 28 days after the exposure. These guidelines do not differentiate between drugs used for malaria prophylaxis This study will administer the post-exposure regimen to volunteers from a US population of military age who are taking one of three malaria prophylaxis regimens or no malaria prophylaxis. The goal of this study is to asses if individuals on malaria prophylaxis achieve the required rabies titer after completion of the four dose regimen. Obtaining rabies vaccine and rabies immune globulin in a deployed setting can be challenging. A full understanding of the requirements for protecting exposed individuals is necessary for appropriate decision making in a resource-constrained environment. ;
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