Presentation on theme: "Outbreak of Mycobacterium tuberculosis Among Employees of an Elephant Refuge Rendi Murphree, PhD CDR, USPHS Tennessee Department of Health EIS Field Assignments."— Presentation transcript:
Outbreak of Mycobacterium tuberculosis Among Employees of an Elephant Refuge Rendi Murphree, PhD CDR, USPHS Tennessee Department of Health EIS Field Assignments Branch, DAS (proposed), SEPDPO (proposed)
The Outbreak Notification – October, 2009 – 5 tuberculin skin test (TST) conversions among employees of the refuge Investigation objectives – Determine extent of outbreak – Identify risk factors for TST conversion in humans – Prevent ongoing transmission
Findings Zoonotic Mtb transmission from an elephant to humans Insufficient infection control – Inconsistent use of respirators – Aerosol generating procedures – Unrestricted air flow
Limitations Small study population 11 employees not contacted Formal air flow studies pending
Recommendations Relocate nonessential personnel Increase use of respirators Revise infection control practices
Acknowledgments Elephant refuge employees and leadership Tennessee Wildlife Regulatory Authority – Walter Cook TN South-central Regional Health Office – Lang Smith, MD – Joy Smith, RN Lewis County Health Department Tennessee Department of Health – John R. Dunn, DVM, PhD – Jon V. Warkentin, MD, MPH – Timothy F. Jones, MD Vanderbilt University School of Medicine – William S. Schaffner, MD CDC – W. Randolph Daley, DVM, MPH The findings and conclusions in this report are those of the author and do not necessarily represent the official position of the Centers for Disease Control and Prevention.