Journal
VIRUSES-BASEL
Volume 14, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/v14051111
Keywords
immune globulins; lyssavirus; neglected diseases; prophylaxis; rabies; vaccines; zoonosis
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Rabies is a devastating disease that needs appropriate and timely prevention and treatment. The current categorization for rabies exposure needs revision to include a special Category IV for severe bites. Multiple factors that contribute to the severity of the disease have not been considered in current recommendations. The introduction of Category IV will optimize patient management and improve care for high-risk patients, highlighting the urgency of this neglected disease at a global level.
Rabies is a devastating disease and affects millions of people globally, yet it is preventable with appropriate and timely postexposure prophylaxis (PEP). The current WHO exposure categories (Categories I, II, and III) need revision, with a special Category IV for severe exposures. Rare cases of PEP failure have occurred in severe bites to the head and neck. Multiple factors, including route, wound severity, depth, contamination, viral dose, proximity to highly innervated areas and the CNS, and the number of lesions, remain unconsidered. Injuries in areas of high neural density are the most significant considering lyssavirus pathophysiology. Current recommendations do not account for these factors. A Category IV designation would acknowledge the severity and the increased risk of progression. Subsequently, patient management would be optimized with wound care and the appropriate administration of rabies-immune globulin/monoclonal antibodies (RIG/MAbs). All Category IV exposures would be infiltrated with the full dose of intact RIG (i.e., human RIG or MAbs) if the patient was previously unvaccinated. More concentrated RIG/MAb formulations would be preferred. As a world rabies community, we cannot tolerate PEP failures. A fourth WHO categorization will improve the care of these high-risk patients and highlight the global health urgency of this neglected disease.
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