Chembio Diagnostic Systems, Inc. has developed a line of novel lateral-flow serological tests for Tuberculosis (TB) which are USDA approved for:
- DPP® VetTB Assay for Cervids – Elk / Red Deer, Fallow Deer, and White-tailed Deer
- DPP® VetTB Assay for Elephants
Humans can and do get infected with TB from animals, caused by the bacterium M. bovis, a member of the M. tuberculosis complex group. In general, the infection of M. bovis in humans is higher in rural areas where there are higher rates of infected herd animals.
In highly-developed areas of the world, TB elimination programs have been instituted into herd populations with substantial success. Elsewhere in the world, its prevalence and associated risks to public health are closely linked to relative levels of economic development and the practicalities of implementing control measures for infected herd populations.
Many TB-infected, free-range wildlife populations may be visibly asymptomatic, thus making timely detection problematic. In addition, even though seemingly asymptomatic, these animals are highly contagious.
Until now, skin testing was the only “reliable” test to detect bovine TB. Among these, the CFT (Caudal-Fold Tuberculin Test) is often used as a frontline skin screening TB test, yet it is estimated that the false negative rate of the CFT test may be as high as 15%. In other species, the tuberculin skin test is so unreliable that alternative tests are required in order to confirm TB infection.
Serological assays have shown promise as a diagnostic alternative for many of these species. Serological blood-based TB assays are appealing not only due to better sensitivity and specificity for captive wildlife, exotic zoo species, and other nontraditional livestock but also because they require only a single handling event, thereby minimizing capture-associated injuries.