| potential for dengue in south africa: mosquito ecology with particular reference to aedes aegypti. | observations on prevalence, geographical distribution, utilization of artificial larval habitats and anthropophilism were made on diurnal mosquitoes at selected localities along the coast of natal and inland in the transvaal to identify potential vectors of dengue in south africa. larval collections made in artificial containers on the ground, the exposure of bamboo pots as ovitraps in trees and collection of mosquitoes biting man showed the following species as the most likely candidates for ve ... | 1991 | 1787403 |
| dengue 2 outbreak in southeastern senegal during 1990: virus isolations from mosquitoes (diptera: culicidae). | during 1990, dengue-2 (den-2) virus was isolated for the first time from mosquitoes (aedes furcifer, six isolates; ae. taylori, six isolates; ae. luteocephalus, seven isolates) collected during an epidemic in which den-2 virus also was isolated from humans. numerous isolations have been made previously from mosquitoes in the absence of human infection. in senegal, den-2 virus appears to be maintained in an enzootic cycle and, therefore, plays an expanding role in human disease and increases the ... | 1994 | 7932611 |
| [epidemiology of arbovirus diseases: use and value of physiologic age determination of female mosquito vectors]. | the physiological age of yellow fever aedes females in africa was studied during four years, from 1988 to 1992. we used a method, according to polovodova's method, which looks for the "yellow body" under natural light. those yellow bodies exist in the old females, the "parous" ones, and not in the young females, the "nulliparous" ones. we present some results to illustrate the interest of studying the physiological age of mosquitoes in the epidemiology of the arboviral diseases. the transmission ... | 1996 | 8924776 |
| amplification of the sylvatic cycle of dengue virus type 2, senegal, 1999-2000: entomologic findings and epidemiologic considerations. | after 8 years of silence, dengue virus serotype 2 (denv-2) reemerged in southeastern senegal in 1999. sixty-four denv-2 strains were isolated in 1999 and 9 strains in 2000 from mosquitoes captured in the forest gallery and surrounding villages. isolates were obtained from previously described vectors, aedes furcifer, ae. taylori, ae. luteocephalus, and--for the first time in senegal--from ae. aegypti and ae. vittatus. a retrospective analysis of sylvatic denv-2 outbreaks in senegal during the la ... | 2003 | 12643833 |
| mitochondrial markers for molecular identification of aedes mosquitoes (diptera: culicidae) involved in transmission of arboviral disease in west africa. | correct classification of the insect vector is central to the study of arboviral disease. a simple molecular method for identification of the main vectors of the mosquito-borne viruses, dengue, yellow fever, and rift valley fever in senegal, west africa, was developed. we present a system in which the five mosquito species (diptera: culicidae) responsible for the majority of flaviviral disease transmission in senegal can be reliably identified using small amounts of dna coextracted during flaviv ... | 2005 | 15691004 |
| potential role of sylvatic and domestic african mosquito species in dengue emergence. | dengue virus 2 (denv-2) strains that circulate in sylvatic habitats of senegal and other parts of west africa are believed to represent ancestral forms that evolved into endemic/epidemic strains that now circulate widely in urban areas of the tropics. previous studies suggested that the evolution of the endemic/epidemic strains was mediated by adaptation to the peridomestic mosquito vectors aedes aegypti and ae. albopictus. we conducted experimental infections using sylvatic and peridomestic sen ... | 2005 | 16103619 |
| larval ecology of mosquitoes in sylvatic arbovirus foci in southeastern senegal. | although adult mosquito vectors of sylvatic arbovirus [yellow fever (yfv), dengue-2 (denv-2) and chikungunya (chikv)] have been studied for the past 40 years in southeastern senegal, data are still lacking on the ecology of larval mosquitoes in this area. in this study, we investigated the larval habitats of mosquitoes and characterized their seasonal and spatial dynamics in arbovirus foci. | 2012 | 23216815 |