Developing optimal vaccination strategies for Rift Valley fever in East Africa
Permanent URI for this collectionhttps://hdl.handle.net/10568/82775
Browse
Recent Submissions
Item Application of system dynamics modelling in the analysis of economic impacts of Rift Valley fever: A case study of Ijara County, Kenya(Report, 2021-11-15) Wanyoike, Francis N.; Dizyee, Kanar; Bett, Bernard K.; Rich, Karl M.Assessment of impacts of livestock diseases tends to be rather challenging due to several reasons including complexity of the livestock value chains themselves; interactions of livestock with other sectors of the economy; short term versus long term impacts of diseases; and feedback reactions by value chain actors to risks posed by a disease including control measures imposed by authorities to control disease spread. Methodologies used for the assessment of impact of livestock diseases should also lend themselves to scenario analyses of different policy interventions and their predicted ex-ante impact on the system over time. To address these problems in the case of Rift Valley fever (RVF), this study constructs a system dynamic (SD) model that can be used for ex-ante analysis of impacts of different prevention strategies. Results show that vaccination under the business-as-usual strategy is associated with minimal benefits in terms of lessening the level of erosion of stocks of animals, reduction in number of animal sales, together with incomes earned by producers from the sale of animals if outbreaks occur. On the other hand, adoption of an annual vaccination program through which at least 60% of susceptible animals are immunised each year can mitigate occurrence of outbreaks. Reduction in the amount of time that lapses between the outbreak of the disease and initiation of the vaccination campaigns is associated with reduced erosion of animal stocks together with relatively higher level of animal offtakes and income for producers.Item The role of gender dimensions in the transmission and control of Rift Valley fever in Uganda(Brief, 2021-02-15) Namatovu, Jane; Campbell, Zoë A.; Ouma, Emily A.Item Mapping the risk of Rift Valley fever in Uganda(Poster, 2020-10) Tumusiime, Dan; Bett, Bernard K.; Kihu, S.; Mutua, Edna N.; Ademun, RoseItem Mapping the risk of Rift Valley fever in Uganda(Poster, 2019-09-17) Tumusiime, Dan; Kihu, Simon; Mutua, Edna N.; Bett, Bernard K.Item Willingness to pay for a Rift Valley fever (RVF) vaccine among Kenyan cattle producers(Journal Article, 2019-11) Wanyoike, Francis N.; Mtimet, Nadhem; Bett, Bernard K.A double bounded contingent valuation (CV) model was used to assess the Willingness to Pay (WTP) for vaccination of cattle against RVF in a sample of 276 livestock producers in Murang’a, Laikipia and Kwale Counties. While the level of awareness about the disease was rather low, nearly all respondents expressed willingness to have their animals vaccinated against the disease. Average WTP was highest in Murang’a (mean = US$1.44) where farmers practice dairy farming using exotic breeds of cattle compared to Laikipia (mean = US$1.24), where both exotic dairy and local breeds of cattle together with their crosses are kept, and Kwale (mean = US$1.01) where local breeds are predominantly kept. These average levels of WTP were 17%–67% higher than the estimated cost incurred by government (US$0.86 per head of cattle) in the most recent vaccination campaign conducted during RVF outbreak. Surprisingly, WTP tended to be lower among producers with many heads of cattle probably because the large herds would translate to bigger total costs. The study recommended support for sensitization campaigns about RVF and its control measures. While the high average levels of WTP implies potential for commercialization of vaccination against RVF, there may be need for price differentiation by region to ensure that sufficiently high numbers of producers vaccinate their animals to prevent outbreaks.Item Towards the development of risk-based intervention strategies for Rift Valley fever in Uganda(Report, 2018-08-09) Tumusiime, Dan; Kihu, S.; Mutua, Edna N.; Bett, Bernard K.Item Homa ya Bonde la Ufa: Matukio na dalili za ugonjwa(Video, 2018-08-03) International Livestock Research InstituteHoma ya Bonde la Ufa ni ugonjwa unaosababishwa na virusi. Adhari zake kwa mifugo ni kutupa au kuavya mimba kwa wingi na vifo vya watoto wa mifugo pindi wanapozaliwa. Ugonjwa wenyewe una asili ya wanyama ambapo pia huweza kuenezwa kwa binadamu.Item Homa ya Bonde la Ufa: Kuzuia na kudhibiti(Video, 2018-08-03) International Livestock Research InstituteHoma ya Bonde la Ufa ni ugonjwa unaosababishwa na virusi. Adhari zake kwa mifugo ni kutupa au kuavya mimba kwa wingi na vifo vya watoto wa mifugo pindi wanapozaliwa.Item Rift Valley fever: Prevention and control(Video, 2018-08-03) International Livestock Research InstituteRift Valley fever is a viral disease that affects sheep, goats and camels and cattle resulting in abortion and deaths in young animals. It also affects humans. This film explains the the signs of Rift Valley fever in animals and ways of preventing and controlling the disease.Item Rift Valley fever: Occurrence patterns, signs and symptoms(Video, 2018-08-03) International Livestock Research InstituteRift Valley fever is a viral disease that affects sheep, goats and camels and cattle resulting in abortion and deaths in young animals. It also affects humans. This film explains the occurrence patterns, signs and symptoms of Rift Valley fever.Item Developing vaccination strategies for Rift Valley fever in East Africa(Poster, 2018-08-15) International Livestock Research InstituteItem Food safety as a pathway to nutrition: The MoreMilk project(Presentation, 2018-11-21) Alonso, Silvia; Grace, DeliaItem Is my milk safe? Quality and safety of the milk consumed in low-income households in Nairobi(Presentation, 2018-11-13) Alonso, Silvia; Varnell, Hannah; Keefe, Rachel; Wainaina, Martin; Roesel, Kristina; Grace, DeliaItem Towards the development of optimal vaccination strategies for Rift Valley fever in East Africa(Presentation, 2018-03-26) Bett, Bernard K.; Gachohi, John M.; Karungo, C.; Bukachi, S.; Svitek, Nicholas; Njenga, K.; Oyas, H.Item MoreMilk: making the most of milk(Presentation, 2018-03-09) Alonso, SilviaItem Developing vaccination strategies for Rift Valley fever in East Africa(Report, 2017-10-05) International Livestock Research InstituteItem Developing optimal vaccination strategies for Rift Valley fever in East Africa(Brochure, 2017-08-31) International Livestock Research Institute