Diversity and transboundary mobility of serotype O foot-and-mouth disease virus in East Africa: Implications for vaccination policies

Simple item page
dc.contributor.authorBalinda, Sheila N.
dc.contributor.authorSangula, Abraham K.
dc.contributor.authorHeller, Rasmus
dc.contributor.authorMuwanika, Vincent B.
dc.contributor.authorBelsham, Graham J.
dc.contributor.authorMasembe, Charles
dc.contributor.authorSiegismund, Hans R.
dc.date.accessioned2022-05-26T11:38:37Z
dc.date.available2022-05-26T11:38:37Z
dc.date.issued2010
dc.description.abstractFoot-and-mouth disease (FMD) virus serotype O has been responsible for most reported outbreaks of the disease in East Africa. A sustained campaign for the past 40 years to control FMD mainly by vaccination, combined with quarantine and zoosanitary measures has been undertaken with limited success. We investigated the genetic relationships among serotype O strains in eastern Africa using complete VP1 coding region sequences obtained from 46 FMD virus isolates collected in Kenya in the years 1964–2008 and 8 Ugandan isolates collected between 1999 and 2006. In addition, 21 selected FMDV sequences from Genbank representing reference strains from eastern Africa and elsewhere were included in the Bayesian inference analyses and the detection of selection forces. The results confirmed previous observations that eastern Africa harbours four distinct topotypes (clades with >15% sequence divergence). All but one strain isolated post-2000 belonged to topotypes EA-2, EA-3 and EA-4, while all three vaccines have been based on strains in the EA-1 topotype. The estimated dN/dS ratios across the individual codons of the entire VP1 coding region revealed that purifying (negative) selection constituted the dominant evolutionary force. Cross-border disease transmission within the region has been suggested with probable incursions of topotypes EA-3 and EA-4 into Kenya and Uganda from neighboring Ethiopia and Sudan. Weconclude that the vaccines have probably been effective in controlling EA-1, but less so for the other topotypes and propose a more comprehensive representation of topotypes in the development of new vaccines in recognition of the considerable diversity and transboundary nature of serotype O.en_US
dc.identifier.citationBalinda, S. N., Sangula, A. K., Heller, R., Muwanika, V. B., Belsham, G. J., Masembe, C., & Siegismund, H. R. (2010). Diversity and transboundary mobility of serotype O foot-and-mouth disease virus in East Africa: implications for vaccination policies. Infection, Genetics and Evolution, 10(7), 1058-1065.en_US
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S1567134810001851
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/3457
dc.language.isoenen_US
dc.publisherInfection, Genetics and Evolutionen_US
dc.subjectFMDVen_US
dc.subjectTopotypeen_US
dc.subjectSelection East Africaen_US
dc.titleDiversity and transboundary mobility of serotype O foot-and-mouth disease virus in East Africa: Implications for vaccination policiesen_US
dc.typeArticleen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Diversity and transboundary mobility.pdf
Size:
554.43 KB
Format:
Adobe Portable Document Format
Description:
Article
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Agricultural and Veterinary Sciences