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Journal Article 1994

Autor: Young, A.S. Ochanda, H. Perry, Brian D. Morzaria, S.P. Dolan, T.T. Medley, G.F. Gettinby, G.
Enlace original: https://cgspace.cgiar.org/handle/10568/29152

Investigación en Agricultura
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Young, A.S. ,  Ochanda, H. ,  Perry, Brian D. ,  Morzaria, S.P. ,  Dolan, T.T. ,  Medley, G.F. ,  Gettinby, G. ,  [The biology of the transmission dynamics of Theileria parva] ,  The biology of the transmission dynamics of Theileria parva
Conference Paper 2003-11-17

Autor: O'Callaghan, C.J. Medley, G.F. Kiara, Henry K. McDermott, John J. Musoke, A.J. Morzaria, S.P. Perry, Brian D.
Enlace original: https://cgspace.cgiar.org/handle/10568/1071

Investigación en Agricultura
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O'Callaghan, C.J. ,  Medley, G.F. ,  Kiara, Henry K. ,  McDermott, John J. ,  Musoke, A.J. ,  Morzaria, S.P. ,  Perry, Brian D. ,  [Quantitative analysis of dose-response effects in the transmission dynamics of Theileria parva and the impact of sporozoite-neutralising vaccines] ,  Quantitative analysis of dose-response effects in the transmission dynamics of Theileria parva and the impact of sporozoite-neutralising vaccines
Journal Article 1999

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

A mathematical description of the transmission dynamics of the tick-borne infection Cowdria ruminantium in commercial beef enterprises in Zimbabwe was used to consider the potential impact of a candidate vaccine to prevent heartwater. The important characteristics of the vaccine were (1) a delay ...

Enlace original: https://cgspace.cgiar.org/handle/10568/33115

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 on the transmission dynamics of heartwater (Cowdria ruminantium infection)] ,  Predicting the effect of vaccination on the transmission dynamics of heartwater (Cowdria ruminantium infection)
Journal Article 1999

Autor: Peter, T.F. Bryson, N.R. Perry, Brian D. O'Callaghan, C.J. Medley, G.F. Smith, G.E. Mlambo, G. Horak, I.G. Burridge, M.J. Mahan, S.M.

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...

Enlace original: https://cgspace.cgiar.org/handle/10568/29920

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Peter, T.F. ,  Bryson, N.R. ,  Perry, Brian D. ,  O'Callaghan, C.J. ,  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] ,  Cowdria ruminantium infection in ticks in the Kruger National Park
Journal Article 1996

Autor: Ochanda, H. Young, A.S. Wells, C. Medley, G.F. Perry, Brian D.

The transmission of Theileria parva by nymphal and adult Rhipicephalus appendiculatus was compared by the assessment of salivary gland infections in tick batches fed on the same group of infected cattle at the same time. When larval and nymphal R. appendiculatus Muguga ticks were fed concurrently...

Enlace original: https://cgspace.cgiar.org/handle/10568/29389

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Ochanda, H. ,  Young, A.S. ,  Wells, C. ,  Medley, G.F. ,  Perry, Brian D. ,  [Comparison of the transmission of Theileria parva between different instars of Rhipicephalus appendiculatus] ,  Comparison of the transmission of Theileria parva between different instars of Rhipicephalus appendiculatus
Conference Paper 1997

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

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...

Enlace original: https://cgspace.cgiar.org/handle/10568/50184

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Peter, T.F. ,  O'Callaghan, C.J. ,  Perry, Brian D. ,  Medley, G.F. ,  Mahan, S. ,  [Application of PCR in heartwater epidemiology] ,  Application of PCR in heartwater epidemiology
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

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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

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