The Effectof Multiple Vectors on Arbovirus Transmission
Open Access
- 6 May 2010
- journal article
- Published by Brill in Israel Journal of Ecology and Evolution
- Vol. 56 (3-4), 371-392
- https://doi.org/10.1560/IJEE.55.3-4.371
Abstract
Many mosquito-borne arboviruses have more than one competent vector. These vectors may or may not overlap in space and time, and may interact differently with vertebrate hosts. The presence of multiple vectors for a particular virus at one location over time will influence the epidemiology of the system, and could be important in the design of intervention strategies to protect particular hosts. A simulation model previously developed for West Nile and St. Louis encephalitis viruses andCulex nigripalpuswas expanded to consider two vector species. These vectors differed in their abundance through the year, but were otherwise similar. The model was used to examine the consequences of different combinations of abundance patterns on the transmission dynamics of the virus. The abundance pattern based onCx. nigripalpusdominated the system and was a key factor in generating epidemics in the wild bird population. The presence of two vectors often resulted in multiple epidemic peaks of transmission. A species which was active in the winter could enable virus persistence until another vector became active in the spring, summer, or fall. The day the virus was introduced into the system was critical in determining how many epidemic peaks were observed and when the first peak occurred. The number of epidemic peaks influenced the overall proportion of birds infected. The implications of these results for assessing the relative importance of different vector species are discussed.Keywords
This publication has 45 references indexed in Scilit:
- Species Interactions Among Larval Mosquitoes: Context Dependence Across Habitat GradientsAnnual Review of Entomology, 2009
- The enhancement of arbovirus transmission and disease by mosquito saliva is associated with modulation of the host immune responseTransactions of the Royal Society of Tropical Medicine and Hygiene, 2008
- Host-Seeking Heights, Host-Seeking Activity Patterns, and West Nile Virus Infection Rates for Members of the Culex pipiens Complex at Different Habitat Types Within the Hybrid Zone, Shelby County, TN, 2002 (Diptera: Culicidae)Journal of Medical Entomology, 2008
- Larval competition alters susceptibility of adultAedesmosquitoes to dengue infectionProceedings. Biological sciences, 2007
- Conspicuous impacts of inconspicuous hosts on the Lyme disease epidemicProceedings. Biological sciences, 2007
- Simulation Studies of St. Louis Encephalitis and West Nile Viruses: The Impact of Bird MortalityVector-Borne and Zoonotic Diseases, 2001
- Vector Competence of Selected North American Culex and Coquillettidia Mosquitoes for West Nile VirusEmerging Infectious Diseases, 2001
- Mosquito Surveillance for West Nile Virus in Connecticut, 2000: Isolation fromCulex pipiens,Cx. restuans,Cx. salinarius, andCuliseta melanuraEmerging Infectious Diseases, 2001
- BIODIVERSITY AND THE DILUTION EFFECT IN DISEASE ECOLOGYEcology, 2001
- Culex nigripalpus : Seasonal Shift in the Bird-Mammal Feeding Ratio in a Mosquito Vector of Human EncephalitisScience, 1968