Adult Amblyomma hebraeum ticks, the principle vector of heartwater (cowdriosis) of domestic ruminants in southern Africa, were collected in pheromone traps placed in Kruger National Park, an exclusively wildlife sanctuary in South Africa. These ticks transmitted Cowdria ruminantium, the rickettsi...
Peter, T.F.
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Bryson, N.R.
,
Perry, Brian D.
,
O'Callaghan, C.J.
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Medley, G.F.
,
Smith, G.E.
,
Mlambo, G.
,
Horak, I.G.
,
Burridge, M.J.
,
Mahan, S.M.
,
[Cowdria ruminantium infection in ticks in the Kruger National Park]
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Cowdria ruminantium infection in ticks in the Kruger National Park
Analysis of the transmission dynamics of Cowdria ruminantium, the tick-borne rickettsial agent of heartwater in ruminants, requires accurate measures of infection in vector populations. To obtain these, Amblyomma hebraeum ticks were collected at two heartwater-endemic locations in the lowveld and...
Peter, T.F.
,
Perry, Brian D.
,
O'Callaghan, C.J.
,
Medley, G.F.
,
Mlambo, G.
,
Barbet, A.F.
,
Mahan, S.M.
,
[Prevalence of Cowdria ruminantium infection in Amblyomma
hebraeum ticks from heartwater-endemic areas of Zimbabwe]
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Prevalence of Cowdria ruminantium infection in Amblyomma
hebraeum ticks from heartwater-endemic areas of Zimbabwe
Heartwater is a severe tick-borne, non-contagious disease of ruminant livestock caused by the rickettsia Cowdria ruminantium, which is endemic in much of sub-Saharan Africa and in the Caribbean. Transmission occurs via ticks of the Amblyomma genus, primarily A. variegatum and A. hebraeum. Intense...
Peter, T.F.
,
O'Callaghan, C.J.
,
Perry, Brian D.
,
Medley, G.F.
,
Mahan, S.
,
[Application of PCR in heartwater epidemiology]
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Application of PCR in heartwater epidemiology
Heartwater, a disease of ruminants caused by the rickettsia Cowdria ruminantium and transmitted by ticks of the genus Amblyomma, is a significant cause of productivity losses in cattle, sheep and goats in most of sub-Saharan Africa. In southern Africa, the vector of C. ruminantium is A. hebraeum....
Perry, Brian D.
,
Chamboko, Tafireyi
,
Mahan, S.
,
Medley, G.F.
,
Mukhebi, A.W.
,
O'Callaghan, C.J.
,
Peter, T.F.
,
[A study of the effects of heartwater and its control on livestock productivity and economics in Zimbabwe]
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A study of the effects of heartwater and its control on livestock productivity and economics in Zimbabwe
Heartwater, caused by the rickettsial organism Cowdria ruminantium and transmitted by ticks of the genus Amblyomma, is considered to be the most important tick-borne disease of cattle in southern Africa, and is second only in importance to East Coast fever (theileriosis) in eastern Africa. This p...
O'Callaghan, C.J.
,
Medley, G.F.
,
Peter, T.F.
,
Perry, Brian D.
,
[Modelling the transmission dynamics of Cowdria ruminantium: Supporting the case for endemic stability]
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Modelling the transmission dynamics of Cowdria ruminantium: Supporting the case for endemic stability
Heartwater is a disease of high mortality in domestic ruminants (cattle, sheep and goats) in sub-Saharan Africa and in the Caribbean. An intracellular rickettsia, Cowdria ruminantium, is the cause of the disease and is transmitted by ticks of the genus Amblyomma. Losses due to heartwater are high...
Peter, T.F.
,
O'Callaghan, C.J.
,
Medley, G.F.
,
Mahan, S.M.
,
Perry, Brian D.
,
[Biological support for modeling the transmission dynamics of cowdriosis]
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Biological support for modeling the transmission dynamics of cowdriosis