Comparative Role ofAedes albopictusandAedes aegyptiin the Emergence of Dengue and Chikungunya in Central Africa
- 1 April 2010
- journal article
- research article
- Published by Mary Ann Liebert Inc in Vector-Borne and Zoonotic Diseases
- Vol. 10 (3) , 259-266
- https://doi.org/10.1089/vbz.2009.0005
Abstract
Since its discovery in Nigeria in 1991, Aedes albopictus has invaded much of Central Africa, a region where Ae. aegypti also occurs. To assess the relationship between the invasion by Ae. albopictus and the recent emergence of dengue virus (DENV) and chikungunya virus (CHIKV), we undertook vector competence experiments on populations collected from Cameroon and conducted field investigations during concurrent epidemics of DENV and CHIKV in Gabon. Overall, infection and dissemination rates were not significantly different between Ae. albopictus and Ae. aegypti when exposed to titers of 108.1 mosquito infectious dose 50/mL and 107.5 plaque forming units/mL of DENV type 2 and CHIKV, respectively. Field investigations showed that Ae. albopictus readily bit man, was abundant, and outnumbered Ae. aegypti to a large extent in Gabon, particularly in suburban environments. Nevertheless, Ae. aegypti was predominant in the more urbanized central parts of Libreville. In this city, CHIKV and DENV were detected only in Ae. albopictus. These data strongly suggest that Ae. albopictus acted as the major vector of both viruses in Libreville in 2007, impacting on the epidemiology of DENV and CHIKV in this area.Keywords
This publication has 31 references indexed in Scilit:
- Chikungunya Virus inAedes albopictus, ItalyEmerging Infectious Diseases, 2008
- Vector competence of Aedes aegypti populations from Senegal for sylvatic and epidemic dengue 2 virus isolated in West AfricaTransactions of the Royal Society of Tropical Medicine and Hygiene, 2008
- Geographic Distribution and Developmental Sites of Aedes albopictus (Diptera: Culicidae) During a Chikungunya Epidemic EventVector-Borne and Zoonotic Diseases, 2008
- Chikungunya virus adapts to tiger mosquito via evolutionary convergence: a sign of things to come?Virology Journal, 2008
- FIRST RECORD OF AEDES ALBOPICTUS IN GABONJournal of the American Mosquito Control Association, 2007
- HABITAT SEGREGATION OF DENGUE VECTORS ALONG AN URBAN ENVIRONMENTAL GRADIENTThe American Journal of Tropical Medicine and Hygiene, 2007
- Spread of The Tiger: Global Risk of Invasion by The MosquitoAedes albopictusVector-Borne and Zoonotic Diseases, 2007
- Convergent Habitat Segregation of Aedes aegypti and Aedes albopictus (Diptera: Culicidae) in Southeastern Brazil and FloridaJournal of Medical Entomology, 2003
- Geographic Genetic Variation in Populations of the Dengue Virus Vector Aedes aegyptiJournal of Molecular Evolution, 2002
- Flavivirus Susceptibility in Aedes aegyptiArchives of Medical Research, 2002