Transmission of Tuberculosis from Elephants to Humans
Author Information
Author(s): Kathleen Michalak, Connie Austin, Sandy Diesel, J. Maichle Bacon, Phil Zimmerman, Joel N. Maslow
Primary Institution: McHenry County Department of Health
Hypothesis
Can Mycobacterium tuberculosis be transmitted from elephants to humans?
Conclusion
The study indicates that M. tuberculosis can be transmitted between humans and elephants, as evidenced by DNA fingerprinting.
Supporting Evidence
- Eleven out of 22 handlers tested positive for tuberculosis.
- DNA fingerprinting showed identical patterns between elephant and human isolates.
- Handlers had close contact with infected elephants, increasing transmission risk.
Takeaway
This study shows that elephants can get tuberculosis and can pass it to people who take care of them.
Methodology
An epidemiologic investigation was conducted, including TB screening of handlers and molecular analysis of isolates.
Limitations
The original source of infection for both elephants and humans is unknown.
Participant Demographics
22 animal handlers, including 12 elephant handlers and 10 tiger handlers.
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