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Bovine tuberculosis: making a case for effective surveillance
C Probst1, C Freuling, I Moser
1Friedrich-Loeffler-Institut, Institute of Epidemiology, Wusterhausen, Germany. Carolina.Probst@fli.bund.de
Epidemiology and Infection
|April 16, 2010
Summary
Bovine tuberculosis (bTB) can spread undetected through animal trade. Enhanced surveillance combining meat inspection and skin testing is crucial for effective bTB control in cattle herds.
Area of Science:
- Veterinary Epidemiology
- Infectious Disease Control
- Animal Health Management
Background:
- Bovine tuberculosis (bTB) poses a significant threat to animal health and trade.
- Meat inspection identified a suspicious case, initiating an epidemiological investigation.
- Previous surveillance methods may not be sufficient for early detection.
Purpose of the Study:
- To investigate a bTB outbreak in north-western Germany.
- To determine the transmission routes and molecular characteristics of the causative agent.
- To evaluate the effectiveness of current surveillance strategies.
Main Methods:
- Epidemiological investigation following a meat inspection finding.
- Intradermal skin testing (tuberculin testing) on suspect animals.
- Molecular characterization of Mycobacterium bovis isolates.
Main Results:
- 135 cattle on 12 farms tested positive for bTB.
- Eight farms had trade contact with the suspected index farm.
- All isolates shared identical molecular profiles, indicating a common source.
Conclusions:
- Animal trade is a significant driver for bTB transmission.
- bTB can remain latent in herds without regular testing.
- Integrated surveillance combining meat inspection and tuberculin testing is recommended.
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