Assessment of Rabies Exposure Risk in a Group of U.S. Air Force Basic Trainees — Texas, January 2014

• Published in: MMWR. Morbidity and mortality weekly report Vol. 63; no. 34; pp. 749 - 752
• Main Authors: Webber, Bryant J., Ayers, Karyn J., Winterton, Brad S., Yun, Heather C., Cropper, Thomas L., Foster, Johnnie, Kren, Matthew C., Meek, Brianna Y., Oliver, Tiffany A., Hudson, Christopher M.
• Format: Journal Article Newsletter
• Language: English
• Published: United States Center for Surveillance, Epidemiology, and Laboratory Services, Centers for Disease Control and Prevention (CDC), U.S. Department of Health and Human Services 29-08-2014; U.S. Government Printing Office; U.S. Center for Disease Control; U.S. Centers for Disease Control
• Subjects: Air forces; Animals; Bats; Bites and Stings - epidemiology; Bites and Stings - prevention & control; Chiroptera; Environmental Exposure - analysis; Environmental Exposure - prevention & control; Environmental Monitoring - statistics & numerical data; Environmental Restoration and Remediation - methods; Flight training; Health aspects; Human exposure; Humans; Military aviation; Military personnel; Military Personnel - statistics & numerical data; Post exposure prophylaxis; Prophylaxis; Public health; Rabies; Rabies - epidemiology; Rabies - prevention & control; Rabies - transmission; Rabies Vaccines - administration & dosage; Rabies virus; Residential buildings; Risk analysis; Risk Factors; Tadarida brasiliensis; Texas - epidemiology; United States; Vaccination; Zoonoses - epidemiology; Zoonoses - prevention & control; Zoonoses - transmission; United States; Texas; United States > US
• EISSN: 1545-861X
• ISSN: 0149-2195

In January 2014, members of the Joint Base San Antonio (JBSA)-Lackland, Texas, preventive medicine and public health teams evaluated a U.S. Air Force basic training squadron for potential exposure in sleeping bays to rabies virus carried by Mexican free-tailed bats (Tadarida brasiliensis). Exposure to bats while asleep or otherwise unaware is an important risk factor for rabies in the United States. Over the past several decades, most indigenous human rabies infections in the United States have resulted from the bite of an infected bat, and the bite was not reported in more than half of the cases. Mexican free-tailed bats in Texas often carry rabies virus. Among 8,904 bats tested during 2001-2010, a total of 1,558 (18%) tested positive for rabies. To assess the risk to the Air Force trainees and identify those for whom rabies postexposure prophylaxis (PEP) might be indicated, Lackland preventive medicine and public health teams interviewed 922 persons (866 trainees and 56 instructors) and determined that PEP, consisting of human rabies immune globulin and the 4-dose vaccination series given over 14 days, was indicated for 200 persons (22%). This report describes the public health response to a mass indoor exposure to bats, including group-based rabies risk stratification, adverse reactions to PEP, and infestation remediation. These interventions can be considered for future mass exposures to bats.