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Download - Animal & Human Health for the Environment and ...

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important <strong>and</strong> threatening disease of livestock <strong>the</strong>re<strong>for</strong>e dictates that FMD is <strong>the</strong> most important disease in <strong>the</strong> KAZA TFCA, because Botswana, Namibia <strong>and</strong> Zimbabwe (up to 2002) achieved access <strong>for</strong> <strong>the</strong>ir beef to <strong>the</strong> EU market by creating FMD-­‐free zones without vaccination of cattle. This involves ensuring separation between cattle <strong>and</strong> buffalo by <strong>the</strong> creation of a protection zone in which cattle are vaccinated <strong>and</strong> by implementing strict movement controls. Zimbabwe lost its access after uncontrolled FMD outbreaks occurred in <strong>the</strong> <strong>for</strong>merly free zones from 2002 onwards owing to ineffective disease management. Botswana has temporarily lost access to <strong>the</strong> EU beef market owing to problems with its traceability system <strong>and</strong> food safety issues in its export abattoirs. FMD is one of <strong>the</strong> most regulated animal diseases in <strong>the</strong> region, featuring prominently in <strong>the</strong> legislation of all <strong>the</strong> countries included in <strong>the</strong> study. An upsurge in <strong>the</strong> occurrence of FMD in SADC countries from 2002 -­‐ 2009 compared with <strong>the</strong> preceding 20 years was noted by Thobokwe et al. (2010). The change was attributed to climatic factors such as flooding that resulted in increased wildlife movement <strong>and</strong> mixing with domestic livestock as well as excessive reliance on vaccination. O<strong>the</strong>r factors may include poor fence maintenance, decreased efficacy of vaccination, <strong>and</strong> generally poor disease management <strong>and</strong> control procedures in some countries in <strong>the</strong> region. There is evidence that vaccines against FMD in use currently in <strong>the</strong> SADC region do not adequately match some viral variants endemic to <strong>the</strong> region (SADC 2010). Since cattle production in <strong>the</strong> region is not severely affected by FMD but <strong>the</strong> effects on trade, especially <strong>the</strong> export trade, can be devastating, it is evident that improved management of FMD is essential, while in <strong>the</strong> interests of biodiversity this needs to be achieved with no or minimum use of fences. The acceptance of appropriately processed de-­‐boned beef as a safe product would go a long way towards improving market access <strong>for</strong> farmers currently excluded from higher value markets (Paton et al. 2010, Thomson et al. 2009). The availability of efficacious vaccines <strong>and</strong> <strong>the</strong>ir proper use could provide <strong>the</strong> reassurance that is crucial <strong>for</strong> sustainable marketing of beef from <strong>the</strong> region. Vaccination is usually used to control outbreaks. Nei<strong>the</strong>r Botswana nor South Africa has resorted to stamping out (culling) to control <strong>the</strong> free zone outbreaks that occurred <strong>the</strong>re in 2010/2011 in spite of <strong>the</strong> fact that it facilitates regaining free status in <strong>the</strong> shortest possible time. 1.4 Rabies Rabies is a fatal neurological disease that can affect all mammals caused by Lyssavirus 1 (family Rhabdoviridae). According to an editorial by Dr Bernard Vallat on <strong>the</strong> OIE website in September 2011 one person dies of rabies every 10 minutes. Rabies occurs worldwide although a number of countries, mainly isl<strong>and</strong>s <strong>and</strong> peninsulas, are free of <strong>the</strong> disease. The disease is present throughout <strong>the</strong> sou<strong>the</strong>rn African region. Rabies virus is almost exclusively transmitted by <strong>the</strong> bites of diseased animals that excrete virus in <strong>the</strong>ir saliva be<strong>for</strong>e succumbing to <strong>the</strong> disease. The vast majority of people in sou<strong>the</strong>rn Africa who die of rabies, as is <strong>the</strong> case throughout <strong>the</strong> world, acquire <strong>the</strong> infection from <strong>the</strong> bites of domestic dogs (Swanepoel 2004). 19

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