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Mokala National Park disease quarantine lifted

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3 min read

The Mokala National Park (MNP) veterinary quarantine has been lifted after more than a year under as a result of a buffalo bull testing positive for Mycobacterium bovis and Mycobacterium tuberculosis, the cause of animal and human tuberculosis respectively.

The bull in question tested positive for both bovine and human tuberculosis just over a year ago. The Park and South African National Parks’ (SANParks) Kimberley holding facility were placed under quarantine following the finding, until a tuberculosis-free status could be established. This included the standstill in movement of all susceptible species from Mokala.

According to SANParks Senior Veterinary Manager, David Zimmermann three scenarios were initially put forward as to the source of infection:

exposure of the buffalo to bovine tuberculosis at MNP as a result of a break in biosecurity;
exposure to the disease while in the holding facilities at Kimberley and
potential contamination of the samples.
In collaboration with the State Veterinary Department, SANParks drew up an action plan to address the various scenarios and investigated the potential source of infection. This included the active surveillance of a significant sample size of buffalo originating from Mokala; the culling and meat inspection of excess game that was required to be taken off from the Park; surveillance of cattle farms surrounding the park; an employee wellness programme to verify possible tuberculosis infection in humans working at the boma and retesting of the initial samples that had been submitted.

“Mokala holds a significant population of disease-free buffalo (i.e. free from bovine tuberculosis, foot and mouth disease, brucellosis and corridor disease) that originated from Kruger National Park’s disease-free breeding project. This is a very valuable resource in terms of genetics and conservation value and therefore strict biosecurity is maintained,” states Zimmerman.

After an intensive investigation and no further confirmation of disease, it is suspected that the initial positive results may have been as a result of sample contamination or a cross-reaction with an unidentified, non-pathogenic mycobacterium.

Mokala, under SANParks Management, represents a unique conservation area in the Northern Cape that straddles the Nama-Karoo and Savanna biomes, and is home to a number of rare and high value game species. The surrounding communities include commercial livestock and game farms which increases the potential for disease to spread both into and out of the Park.

Whilst disease management options are limited in free-ranging wildlife, the emphasis is on prevention of disease introduction and efforts to reduce the risk and impact of indigenous wildlife diseases to neighboring communities and their livestock. This is where the importance of a disease monitoring and management plan comes into play.

In conclusion, Zimmermann states, “In addition, SANParks’ animal disease management aims to avoid the introduction of alien diseases into the National Parks and to limit the impact as well as minimize the spread of disease to neighboring communities and commercial agriculture, while at the same time maintaining the natural fluxes of indigenous diseases as a component of biodiversity. The lifting of the quarantine was welcomed by SANParks and disease surveillance at Mokala will continue routinely.”

Jeanette Briedenhann
Jeanette Briedenhann
Jeanette Phillips joined the team in 2016. She developed a passion and love for all things-travel related in her role as travel journalist, a position she held for over seven years. A brief exodus into the corporate marketing sphere proved that there is no better industry than the travel industry. Research and writing are two of Jeanette’s greatest passions, but she is always open to new challenges and different ways of doing things.

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