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Journal Article 1998

Autor: Peter, T.F. Perry, Brian D. O'Callaghan, C.J. Medley, G.F. Shumba, W. Madzima, W. Burridge, M.J. Mahan, S.M.

The tick vectors of heartwater (Cowdria ruminantium infection) in Zimbabwe, Amblyomma hebraeum and Amblyomma variegatum, historically were believed to be confined to the low-lying regions of the south and north-west of the country. However, country-wide surveys performed in 1975-1980 and 1988-199...

Enlace original: https://cgspace.cgiar.org/handle/10568/32908

Investigación en Agricultura
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Peter, T.F. ,  Perry, Brian D. ,  O'Callaghan, C.J. ,  Medley, G.F. ,  Shumba, W. ,  Madzima, W. ,  Burridge, M.J. ,  Mahan, S.M. ,  [Distributions of the vectors of heartwater, Amblyomma hebraeum and amblyomma variegatum (Acari: Ixodidae), in Zimbabwe] ,  Distributions of the vectors of heartwater, Amblyomma hebraeum and amblyomma variegatum (Acari: Ixodidae), in Zimbabwe
Conference Paper 1997

Autor: O'Callaghan, C.J. Medley, G.F. Peter, T.F. Perry, Brian D.

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...

Enlace original: https://cgspace.cgiar.org/handle/10568/50860

Investigación en Agricultura
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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] ,  Modelling the transmission dynamics of Cowdria ruminantium: Supporting the case for endemic stability
Conference Paper 2000

Autor: O'Callaghan, C.J. Medley, G.F. Peter, T.F. Mahan, S.M. Perry, Brian D.

Heartwater, an infectious disease of ruminants caused by the rickettsia Cowdria ruminantium (transmitted by ixodid ticks of the genus Amblyomma and vertically), severely constrains livestock production throughout sub-Saharan Africa. Its epidemiology varies from epidemics with high mortality (on i...

Enlace original: https://cgspace.cgiar.org/handle/10568/50957

Investigación en Agricultura
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O'Callaghan, C.J. ,  Medley, G.F. ,  Peter, T.F. ,  Mahan, S.M. ,  Perry, Brian D. ,  [Predicting the effect of vaccination of the transmission dynamics of heartwater (Cowdria ruminantium infection)] ,  Predicting the effect of vaccination of the transmission dynamics of heartwater (Cowdria ruminantium infection)
Conference Paper 2000

Autor: Peter, T.F. O'Callaghan, C.J. Medley, G.F. Mahan, S.M. Perry, Brian D.

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...

Enlace original: https://cgspace.cgiar.org/handle/10568/50223

Investigación en Agricultura
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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] ,  Biological support for modeling the transmission dynamics of cowdriosis
Conference Paper 2000

Autor: Minjauw, B. Kruska, R.L. Odero, A. Randolph, Thomas F. McDermott, John J. Mahan, S.M. Perry, Brian D.

Heartwater is a tick-borne disease of cattle, sheep and goats and some wild ruminants prevalent in much of Africa and the Caribbean. It is caused by the rickettsial organism Cowdria ruminantium and transmitted by ticks of the genus Amblyomma. The disease has traditionally been controlled by the u...

Enlace original: https://cgspace.cgiar.org/handle/10568/50419

Investigación en Agricultura
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Minjauw, B. ,  Kruska, R.L. ,  Odero, A. ,  Randolph, Thomas F. ,  McDermott, John J. ,  Mahan, S.M. ,  Perry, Brian D. ,  [Economic impact assessment of Cowdria ruminantium infection and its control in Southern Africa] ,  Economic impact assessment of Cowdria ruminantium infection and its control in Southern Africa

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