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| AuthorsAlfred DeMaria, Jr, MDWichai Techasathit, MD, MPH | Section EditorsMartin S Hirsch, MDSheldon L Kaplan, MD | Deputy EditorBarbara H McGovern, MD |
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More than 3.3 billion people worldwide live in areas where rabies is enzootic [1]. Human mortality from endemic canine rabies in Africa and Asia is estimated to be 55,000 deaths/year. In the United States, there has been an average of two fatal human rabies cases annually since 1980, the majority associated with exposure to bats.
Rabies is virtually always fatal, but infection can be prevented with proper wound care and postexposure prophylaxis. Although the incidence of human rabies is very low in the United States, approximately 16,000 to 39,000 cases with contact to potentially rabid animals receive rabies postexposure prophylaxis annually [2]. The estimated annual expenditure for rabies prevention is $584 million; the cost of postexposure prophylaxis with rabies immune globulin and vaccine accounts for almost half of this expenditure [3].
The safety, efficacy, and administration of rabies immune globulin and rabies vaccine will be reviewed here. Clinical decision-making regarding the necessity for rabies prophylaxis can be complex. This issue and the clinical presentation, diagnosis, and care of the patient with suspected rabies are discussed elsewhere. (See "When to use rabies prophylaxis" and "Clinical manifestations, diagnosis, and treatment of rabies".)
The general principles guiding rabies prophylaxis, as derived from the Advisory Committee on Immunization Practices (ACIP) guidelines of the US Centers for Disease Control and Prevention (CDC), are discussed below [3]. The full set of guidelines can be accessed at: http://www.cdc.gov/mmwr/pdf/rr/rr57e507.pdf.
Timing of prophylaxis — Rabies postexposure prophylaxis is a medical urgency and should begin as soon as possible after the presumed exposure.
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