A review of recent research on Theileria parva: Implications for the infection and treatment vaccination method for control of East Coast fever

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dc.contributor.authorBishop, Richard P.
dc.contributor.authorOdongo, David
dc.contributor.authorAhmed, Jabbar
dc.contributor.authorMwamuye, Micky
dc.contributor.authorNanteza, Anne
dc.contributor.authorLubega, George
dc.contributor.authorGwakisa, Paul
dc.contributor.authorClausen, Peter-Henning
dc.contributor.authorObara, Isaiah
dc.date.accessioned2023-03-06T14:47:11Z
dc.date.available2023-03-06T14:47:11Z
dc.date.issued2020
dc.description.abstractThe infection and treatment (ITM) live vaccination method for control of Theileria parva infection in cattle is increasingly being adopted, particularly in Maasai pastoralist systems. Several studies indicate positive impacts on human livelihoods. Importantly, the first detailed protocol for live vaccine production at scale has recently been published. However, quality control and delivery issues constrain vaccination sustainability and deployment. There is evidence that the distribution of T. parva is spreading from endemic areas in East Africa, North into Southern Sudan and West into Cameroon, probably as a result of anthropogenic movement of cattle. It has also recently been demonstrated that in Kenya, T. parva derived from cape buffalo can ‘breakthrough’ the immunity induced by ITM. However, in Tanzania, breakthrough has not been reported in areas where cattle co-graze with buffalo. It has been confirmed that buffalo in northern Uganda national parks are not infected with T. parva and R. appendiculatus appears to be absent, raising issues regarding vector distribution. Recently, there have been multiple field population genetic studies using variable number tandem repeat (VNTR) sequences and sequencing of antigen genes encoding targets of CD8+ T-cell responses. The VNTR markers generally reveal high levels of diversity. The antigen gene sequences present within the trivalent Muguga cocktail are relatively conserved among cattle transmissible T. parva populations. By contrast, greater genetic diversity is present in antigen genes from T. parva of buffalo origin. There is also evidence from several studies for transmission of components of stocks present within the Muguga cocktail, into field ticks and cattle following induction of a carrier state by immunization. In the short term, this may increase live vaccine effectiveness, through a more homogeneous challenge, but the long-term consequences are unknown.en_US
dc.identifier.citationBishop, R. P., Odongo, D., Ahmed, J., Mwamuye, M., Fry, L. M., Knowles, D. P., ... & Obara, I. (2020). A review of recent research on Theileria parva: Implications for the infection and treatment vaccination method for control of East Coast fever. Transboundary and emerging diseases, 67, 56-67.https://doi.org/10.1111/tbed.13325en_US
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/8080
dc.language.isoenen_US
dc.publisherTransboundary and emerging diseasesen_US
dc.subjectEast Coast feveren_US
dc.subjectTheileria parvaen_US
dc.subjectinfectionen_US
dc.subjectVaccinationen_US
dc.titleA review of recent research on Theileria parva: Implications for the infection and treatment vaccination method for control of East Coast feveren_US
dc.typeArticleen_US
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