Buffalo, Bush Meat, and the Zoonotic Threat of Brucellosis in BotswanaReportar como inadecuado

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Brucellosis is a zoonotic disease of global importance infecting humans, domestic animals, and wildlife. Little is known about the epidemiology and persistence of brucellosis in wildlife in Southern Africa, particularly in Botswana.


Archived wildlife samples from Botswana 1995–2000 were screened with the Rose Bengal Test RBT and fluorescence polarization assay FPA and included the African buffalo 247, bushbuck 1, eland 5, elephant 25, gemsbok 1, giraffe 9, hartebeest 12, impala 171, kudu 27, red lechwe 10, reedbuck 1, rhino 2, springbok 5, steenbok 2, warthog 24, waterbuck 1, wildebeest 33, honey badger 1, lion 43, and zebra 21. Human case data were extracted from government annual health reports 1974–2006.


Only buffalo 6%, 95% CI 3.04%–8.96% and giraffe 11%, 95% CI 0–38.43% were confirmed seropositive on both tests. Seropositive buffalo were widely distributed across the buffalo range where cattle density was low. Human infections were reported in low numbers with most infections 46% occurring in children <14 years old and no cases were reported among people working in the agricultural sector.


Low seroprevalence of brucellosis in Botswana buffalo in a previous study in 1974 and again in this survey suggests an endemic status of the disease in this species. Buffalo, a preferred source of bush meat, is utilized both legally and illegally in Botswana. Household meat processing practices can provide widespread pathogen exposure risk to family members and the community, identifying an important source of zoonotic pathogen transmission potential. Although brucellosis may be controlled in livestock populations, public health officials need to be alert to the possibility of human infections arising from the use of bush meat. This study illustrates the need for a unified approach in infectious disease research that includes consideration of both domestic and wildlife sources of infection in determining public health risks from zoonotic disease invasions.

Autor: Kathleen Anne Alexander , Jason Kenna Blackburn, Mark Eric Vandewalle, Risa Pesapane, Eddie Kekgonne Baipoledi, Phil H. Elzer

Fuente: http://plos.srce.hr/


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