Wildlife Tuberculosis Study Group

During the past 4 months, 6 kudus (Tragelaphus strepsiceros) with noticeble swellings of the head were reported in the southern region of the Kruger National Park. Unfortunately the veterinary personnel were only able to sample 2 of these animals. Due to the fact that kudus live in small family groups and are generally very well camouflaged, it is quite difficult to follow-up on the tourist reports of where kudus with head swellings were observed.

Both animals were females, the adult cow originating from the high water bridge area of Lower Sabie, while the younger sub-adult heifer was found at Skukuza. The kudus were euthanased and brought to the necropsy facilites of the State Veterinary office where detailed necropsies were performed and complete sample sets were collected for culture and histopathology.

The adult cow had bilateral abscessation of the parotid lymph nodes, which also extended to the retropharyngeal lymph nodes. The necropsy revealed generalised disease with tuberculous granulomas in the lungs, on the pleural surface, mediastinal and bronchial lymph nodes as well as some lesions in the mesenteric, hepatic and prescapular lymph nodes. Mycobacterial culture confirmed M. bovis infection, but strain typing has not yet been completed.

The sub-adult animal only showed abscessation of one parotid lymph node. Several pyogranulomas were reported in the lungs and lesions were seen in the mediastinal and bronchial lymph nodes, but no extension to the abdomen and peripheral lymph nodes was reported.

Tourists visiting the park, especially the southern (Marula) region,  are requested to keep their eyes peeled and to please record any sightings of kudus with head swellings. This infomation must please be submitted as soon as possible to any of the following units: Office of the State Veterinarian (013 735 5641);  Veterinary Wildlife Services (013 735 4186);  Or report at Wildlife Surveillance Website ;