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Among the blood-sucking arthropods, ixodid ticks have some of the most complicated feeding behavior requirements. Feeding is preceded by an attachment process, and each instar has to remain fully attached to the same feeding site for a period of 2-14 days. These biological demands have for a long...


Young, A.S.Waladde, S.M.Morzaria, S.P.[Artificial feeding systems for ixodid ticks as a tool for study of pathogen transmission]Artificial feeding systems for ixodid ticks as a tool for study of pathogen transmission
Rumberia, R.M.Rowland, E.Watson, E.D.Eley, R.M.Young, A.S.[The effect of immunization against theileriosis on the reproductive function of Boran/Friesian cross heifers. A preliminary study]The effect of immunization against theileriosis on the reproductive function of Boran/Friesian cross heifers. A preliminary study

Rhipicephalus appendiculatus adult ticks, collected int he field from zebu (Bos indicus) and exotic (Bos tarus) cattle with high antibody titres to Theileria parva schizont antigen, transmitted Theileria parva infection typical of East Coast fever to susceptible cattle. Uninfected R. appendiculat...


Kariuki, D.P.Young, A.S.Morzaria, S.P.Lesan, A.C.Mining, S.K.Omwoyo, P.Wafula, J.L.M.Molyneux, D.H.[Theileria parva carrier state in naturally infected and artificially immunized cattle]Theileria parva carrier state in naturally infected and artificially immunized cattle
Grootenhuis, J.G.Young, A.S.Kanhai, G.K.Paling, R.W.[Experimental tick transmission of Theileria species between eland]Experimental tick transmission of Theileria species between eland
Young, A.S.[Immunization of cattle against theileriosis in Nakuru district of Kenya by infection and treatment and the introduction of unconventional tick control]Immunization of cattle against theileriosis in Nakuru district of Kenya by infection and treatment and the introduction of unconventional tick control
Morzaria, S.P.Irvin, A.D.Wathanga, J.D'Souza, D.Katende, J.M.Young, A.S.Scott, J.R.Gettinby, G.[The effect of East Coast fever immunisation and different acaricidal treatments on the productivity of beef cattle]The effect of East Coast fever immunisation and different acaricidal treatments on the productivity of beef cattle

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...


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

A large database on the transmission of a stabilate of the Theileria parva Muguga stock from one breed of cattle using two stocks of Rhipicephalus appendiculatus, Muguga and O1 Pejeta was developed and analysed. Factors associated with the ticks and cattle, and the infections developing in cattle...


Young, A.S.Dolan, T.T.Morzaria, S.P.Mwakima, F.N.Norval, R.A.I.Scott, J.Sherriff, A.Gettinby, G.[Factors influencing infections in Rhipicephalus appendiculatus ticks fed on cattle infected with Theileria parva]Factors influencing infections in Rhipicephalus appendiculatus ticks fed on cattle infected with Theileria parva

The initiation of feeding of infected Rhipicephalus appendiculatus adults induces the rapid development of Theileria parva sporoblasts within the salivary gland acini leading to the production of numerous sporozoites which are inoculated into the mammalian host initiating infection. In this study...


Shaw, M.K.Young, A.S.[Differential development and emission of Theileria parva sporozoites from the salivary gland of Rhipicephalus appendiculatus]Differential development and emission of Theileria parva sporozoites from the salivary gland of Rhipicephalus appendiculatus

This paper reviews the past contributions of epidemiology and economics to the control of tick-borne infections of cattle in Africa. The factors affecting successful and unsuccessful control are evaluated on a gographical and on a production systems basis, with particular reference to Theileria p...


Perry, Brian D.Young, A.S.[The past and future roles of epidemiology and economics in the control of tick-borne diseases of livestock in Africa: The case of theileriosis]The past and future roles of epidemiology and economics in the control of tick-borne diseases of livestock in Africa: The case of theileriosis

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