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Rift Valley fever : an open-source transmission dynamics simulation model

(2019) PLOS ONE. 14(1).
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Abstract
Rift Valley fever (RVF) is one of the major viral zoonoses in Africa, affecting humans and several domestic animal species. The epidemics in eastern Africa occur in a 5-15 year cycle coinciding with abnormally high rainfall generally associated to the warm phase of the El Niño event. However, recently, evidence has been gathered of inter-epidemic transmission. An open-source, easily applicable, accessible and modifiable model was built to simulate the transmission dynamics of RVF. The model was calibrated using data collected in the Kilombero Valley in Tanzania with people and cattle as host species and Ædes mcintoshi, Æ. ægypti and two Culex species as vectors. Simulations were run over a period of 27 years using standard parameter values derived from two previous studies in this region. Our model predicts low-level transmission of RVF, which is in line with epidemiological studies in this area. Emphasis in our simulation was put on both the dynamics and composition of vector populations in three ecological zones, in order to elucidate the respective roles played by different vector species: the model output did indicate the necessity of Culex involvement and also indicated that vertical transmission in Ædes mcintoshi may be underestimated. This model, being built with open-source software and with an easy-to-use interface, can be adapted by researchers and control program managers to their specific needs by plugging in new parameters relevant to their situation and locality.
Keywords
AEDES-AEGYPTI L., VIRUS-INFECTION, SAUDI-ARABIA, SOUTH-AFRICA, RISK-FACTORS, OUTBREAK, PREVALENCE, SURVIVAL, DIPTERA, KENYA

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Chicago
Sumaye, Robert, Famke Jansen, Dirk Berkvens, Bernard De Baets, Eveline Geubels, Etienne Thiry, and Meryam Krit. 2019. “Rift Valley Fever : an Open-source Transmission Dynamics Simulation Model.” Plos One 14 (1).
APA
Sumaye, R., Jansen, F., Berkvens, D., De Baets, B., Geubels, E., Thiry, E., & Krit, M. (2019). Rift Valley fever : an open-source transmission dynamics simulation model. PLOS ONE, 14(1).
Vancouver
1.
Sumaye R, Jansen F, Berkvens D, De Baets B, Geubels E, Thiry E, et al. Rift Valley fever : an open-source transmission dynamics simulation model. PLOS ONE. 2019;14(1).
MLA
Sumaye, Robert et al. “Rift Valley Fever : an Open-source Transmission Dynamics Simulation Model.” PLOS ONE 14.1 (2019): n. pag. Print.
@article{8607558,
  abstract     = {Rift Valley fever (RVF) is one of the major viral zoonoses in Africa, affecting humans and several domestic animal species. The epidemics in eastern Africa occur in a 5-15 year cycle coinciding with abnormally high rainfall generally associated to the warm phase of the El Ni{\~n}o event. However, recently, evidence has been gathered of inter-epidemic transmission. An open-source, easily applicable, accessible and modifiable model was built to simulate the transmission dynamics of RVF. The model was calibrated using data collected in the Kilombero Valley in Tanzania with people and cattle as host species and {\AE}des mcintoshi, {\AE}. {\ae}gypti and two Culex species as vectors. Simulations were run over a period of 27 years using standard parameter values derived from two previous studies in this region. Our model predicts low-level transmission of RVF, which is in line with epidemiological studies in this area. Emphasis in our simulation was put on both the dynamics and composition of vector populations in three ecological zones, in order to elucidate the respective roles played by different vector species: the model output did indicate the necessity of Culex involvement and also indicated that vertical transmission in {\AE}des mcintoshi may be underestimated. This model, being built with open-source software and with an easy-to-use interface, can be adapted by researchers and control program managers to their specific needs by plugging in new parameters relevant to their situation and locality.},
  articleno    = {e0209929},
  author       = {Sumaye, Robert and Jansen, Famke and Berkvens, Dirk and De Baets, Bernard and Geubels, Eveline and Thiry, Etienne and Krit, Meryam},
  issn         = {1932-6203},
  journal      = {PLOS ONE},
  language     = {eng},
  number       = {1},
  pages        = {27},
  title        = {Rift Valley fever : an open-source transmission dynamics simulation model},
  url          = {http://dx.doi.org/10.1371/journal.pone.0209929},
  volume       = {14},
  year         = {2019},
}

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