Publication: A Modeling Approach to Investigate Epizootic Outbreaks and Enzootic Maintenance of Rift Valley Fever Virus
Issued Date
2014-01-01
Resource Type
ISSN
15229602
00928240
00928240
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2-s2.0-84930764293
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Mahidol University
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SCOPUS
Bibliographic Citation
Bulletin of Mathematical Biology. Vol.76, No.8 (2014), 2052-2072
Suggested Citation
Farida Chamchod, Robert Stephen Cantrell, Chris Cosner, Ali N. Hassan, John C. Beier, Shigui Ruan A Modeling Approach to Investigate Epizootic Outbreaks and Enzootic Maintenance of Rift Valley Fever Virus. Bulletin of Mathematical Biology. Vol.76, No.8 (2014), 2052-2072. doi:10.1007/s11538-014-9998-7 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/33157
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Title
A Modeling Approach to Investigate Epizootic Outbreaks and Enzootic Maintenance of Rift Valley Fever Virus
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Abstract
© 2014, Society for Mathematical Biology. We propose a mathematical model to investigate the transmission dynamics of Rift Valley fever (RVF) virus among ruminants. Our findings indicate that in endemic areas RVF virus maintains at a very low level among ruminants after outbreaks and subsequent outbreaks may occur when new susceptible ruminants are recruited into endemic areas or abundant numbers of mosquitoes emerge when herd immunity decreases. Many factors have been shown to have impacts on the severity of RVF outbreaks; a higher probability of death due to RVF among ruminants, a higher mosquito:ruminant ratio, or a shorter lifespan of animals can amplify the magnitude of the outbreaks; vaccination helps to reduce the magnitude of RVF outbreaks and the loss of animals efficiently, and the maximum vaccination effort (a high vaccination rate and a larger number of vaccinated animals) is recommended before the commencement of an outbreak but can be reduced later during the enzootic.