Open Access. Powered by Scholars. Published by Universities.®
- Discipline
Articles 1 - 6 of 6
Full-Text Articles in Animal Diseases
Characterizing Movement Patterns Of Nomadic Pastoralists And Their Exposure To Rift Valley Fever In Kenya, G. Mosomtai, J. L. Kasiiti, R. M. Murithi, P. Sandström, T. Landmann, O. W. Lwande, O. A. Hassan, C. Ahlm, R. Sang, M. Evander, Z. Szantoi, G. Ottavianelli
Characterizing Movement Patterns Of Nomadic Pastoralists And Their Exposure To Rift Valley Fever In Kenya, G. Mosomtai, J. L. Kasiiti, R. M. Murithi, P. Sandström, T. Landmann, O. W. Lwande, O. A. Hassan, C. Ahlm, R. Sang, M. Evander, Z. Szantoi, G. Ottavianelli
All Peer-Reviewed Publications
The role of animal movement in spreading infectious diseases is highly recognized by various legislations and institutions such as the World Organisation for Animal Health and the International Animal Health Code. The increased interactions at the nexus of human-animal-ecosystem interface have seen an unprecedented introduction and reintroduction of new zoonotic diseases with high socio-economic impacts such as the COVID-19 pandemic. Rift Valley fever (RVF) is a zoonotic disease that affects both humans and animals and is transmitted by Aedes mosquitoes or through contact with the body fluids of infected animals. This study seeks to characterize movement patterns of pastoralist and …
Datasets For Mapping Pastoralist Movement Patterns And Risk Zones Of Rift Valley Fever Occurrence, Gladys Mosomtai, Magnus Evander, Charles Mundia, Per Sandström, Clas Ahlm, Osama Ahmed Hassan, Olivia Wesula Lwande, Moses K. Gachari, Tobias Landmann, Rosemary Sang
Datasets For Mapping Pastoralist Movement Patterns And Risk Zones Of Rift Valley Fever Occurrence, Gladys Mosomtai, Magnus Evander, Charles Mundia, Per Sandström, Clas Ahlm, Osama Ahmed Hassan, Olivia Wesula Lwande, Moses K. Gachari, Tobias Landmann, Rosemary Sang
All Peer-Reviewed Publications
Rift Valley fever (RVF) is a zoonotic disease affecting humans and animals. It is caused by RVF virus transmitted primarily by Aedes mosquitoes. The data presented in this article propose environmental layers suitable for mapping RVF vector habitat zones and livestock migratory routes. Using species distribution modelling, we used RVF vector occurrence data sampled along livestock migratory routes to identify suitable vector habitats within the study region which is located in the central and the north-eastern part of Kenya. Eleven herds monitored with GPS collars were used to estimate cattle utilization distribution patterns. We used kernel density estimator to produce …
The Role Of Hyalomma Truncatum On The Dynamics Of Rift Valley Fever: Insights From A Mathematical Epidemic Model, Sansao A. Pedro, Shirley Abelman, Henri E.Z. Tonnang
The Role Of Hyalomma Truncatum On The Dynamics Of Rift Valley Fever: Insights From A Mathematical Epidemic Model, Sansao A. Pedro, Shirley Abelman, Henri E.Z. Tonnang
All Peer-Reviewed Publications
To date, our knowledge of Rift Valley fever (RVF) disease spread and maintenance is still limited, as flooding, humid weather and presence of biting insects such as mosquitoes, have not completely explained RVF outbreaks. We propose a model that includes livestock, mosquitoes and ticks compartments structured according to their questing and feeding behaviour in order to study the possible role of ticks on the dynamics of RVF. To quantify disease transmission at the initial stage of the epidemic, we derive an explicit formula of the basic reproductive number, R0. Using the concept of Metzler matrix, we state necessary conditions for …
Association Of Ecological Factors With Rift Valley Fever Occurrence And Mapping Of Risk Zones In Kenya, Gladys Mosomtai, Magnus Evander, Per Sandström, Clas Ahlm, Rosemary Sang, Osama Ahmed Hassan, Hippolyte Affognon, Tobias Landmann
Association Of Ecological Factors With Rift Valley Fever Occurrence And Mapping Of Risk Zones In Kenya, Gladys Mosomtai, Magnus Evander, Per Sandström, Clas Ahlm, Rosemary Sang, Osama Ahmed Hassan, Hippolyte Affognon, Tobias Landmann
All Peer-Reviewed Publications
Objective: Rift Valley fever (RVF) is a mosquito-borne infection with great impact on animal and human health. The objectives of this study were to identify ecological factors that explain the risk of RVF outbreaks in eastern and central Kenya and to produce a spatially explicit risk map. Methods: The sensitivity of seven selected ecological variables to RVF occurrence was assessed by generalized linear modelling (GLM). Vegetation seasonality variables (from normalized difference vegetation index (NDVI) data) and 'evapotranspiration' (ET) (metrics) were obtained from 0.25-1 km MODIS satellite data observations; 'livestock density' (N/km2), 'elevation' (m), and 'soil ratio' (fraction of all significant …
Uncertainty And Sensitivity Analysis Of A Rift Valley Fever Model, S. A. Pedro, H. E.Z. Tonnang, S. Abelman
Uncertainty And Sensitivity Analysis Of A Rift Valley Fever Model, S. A. Pedro, H. E.Z. Tonnang, S. Abelman
All Peer-Reviewed Publications
Rift Valley fever (RVF) is a vector-borne viral disease with pronounced health and economic impacts on domestic animals and humans in much of sub-Saharan Africa. Using techniques of uncertainty and sensitivity analysis (both local derivatives and sampling-based methods) of a mathematical model for RVF transmission in livestock by two population of mosquitoes (Aedes and Culex). We systematically investigate the relative importance of each model parameter for both disease epidemic and endemic activities. The relationship between vertical transmission and basic reproduction number reveals that during epidemic activities vertical transmission accelerates the course of the outbreak as it increases the size of …
Linalool Oxide: Generalist Plant Based Lure For Mosquito Disease Vectors, Vincent O. Nyasembe, David P. Tchouassi, Charles M. Mbogo, Catherine L. Sole, Christian Pirk, Baldwyn Torto
Linalool Oxide: Generalist Plant Based Lure For Mosquito Disease Vectors, Vincent O. Nyasembe, David P. Tchouassi, Charles M. Mbogo, Catherine L. Sole, Christian Pirk, Baldwyn Torto
All Peer-Reviewed Publications
Background: Lack of effective vaccines and therapeutics for important arboviral diseases such as Rift Valley fever (RVF) and dengue, necessitates continuous monitoring of vector populations for infections in them. Plant-based lures as surveillance tools has the potential of targeting mosquitoes of both sexes and females of varied physiological states; yet such lures are lacking for vectors of these diseases. Here, we present evidence of the effectiveness of linalool oxide (LO), a single plant-based lure previously developed for malaria vectors in trapping RVF vectors, Aedes mcintoshi and Aedes ochraceus, and dengue vector, Aedes aegypti. Methods: For RVF vectors, we used CDC …