| incidence of arbovirus isolated from mosquitoes in the forest region of south cameroun, region of yaoundé . | the authors give results of a survey of arboviruses isolated from mosquitoes in the neighborhood of yaoundé, southern cameroon, from 1964 to 1972. during this period of nine years 127.520 female mosquitoes including at least 72 species were collected and processed for attempt of virus isolation. 55 strains belonging to 12 viral types were recovered from at least 19 species of mosquitoes. the appearance of different viruses over the years was quite intermittent. a possible reason for this is the ... | 1976 | 16703 |
| importance of low dispersion of anopheles gambiae (diptera: culicidae) on malaria transmission in hilly towns in south cameroon. | the dispersion of anopheles gambiae giles s.l. from larval breeding places was examined in the towns of yaounde and edea, cameroon. the study areas are characterized by hilly reliefs of approximately 40 m and by larval breeding places in the swampy valleys. mosquito density was estimated by night-biting indoor catches carried out during 1 yr in three districts, with four collecting houses in each, along a transect from 0 (at the valley bottom) to 350 m (at the hilltop). in each district, the hum ... | 1993 | 8254644 |
| origin and prevention of airport malaria in france. | since 1969, 63 cases of airport malaria have been reported in western europe, 24 of which occurred in france. most were due to plasmodium falciparum. in 1994, 7 cases occurred in and around roissy charles de gaulle airport (cdg), showing 4 types of contamination: among employees working on airstrips or opening containers, among residents living near the airport, among people living at some distance from the airport after a secondary transport of vectors, and by vectors transported in luggage. in ... | 1998 | 9754664 |
| high malaria transmission intensity in a village close to yaounde, the capital city of cameroon. | a 2-yr longitudinal malaria study was undertaken in a suburb of yaounde, the capital city of cameroon, in the village of simbock, approximately 2 km from the city limits. this study allowed assessment of malaria transmission intensity and dynamics in this region before implementation of pyrethroid impregnated bed nets through the national vector control program. anophelines were captured on human volunteers by pyrethrum spray collections and in resting sites outdoors. malaria vectors were anophe ... | 2002 | 11931035 |
| plasmodium falciparum transmission blocking immunity in three areas with perennial or seasonal endemicity and different levels of transmission. | plasmodium falciparum transmission blocking immunity (tbi) was investigated in 3 different endemic areas. reared anopheles gambiae s.s. were experimentally infected with the blood of gametocyte carriers, either in the presence of autologous plasma (own) or after replacement of the own plasma with a nonimmune serum of ab blood group (control). transmission reduction was defined by a lower level of mosquito infection in the own batch compared with the control. after controlling for the effect of g ... | 2005 | 16354818 |
| anopheles gambiae distribution and insecticide resistance in the cities of douala and yaoundé (cameroon): influence of urban agriculture and pollution. | urban malaria is becoming a major health priority across africa. a study was undertaken to assess the importance of urban pollution and agriculture practice on the distribution and susceptibility to insecticide of malaria vectors in the two main cities in cameroon. | 2011 | 21651761 |
| variations of insecticide residual bio-efficacy on different types of walls: results from a community-based trial in south cameroon. | determination of residual activity of insecticides is essential information for the selection of appropriate indoor spraying operation. the present study was undertaken to evaluate the residual effect of three candidate insecticide formulations on different indoor surfaces in order to guide future interventions, in the context of cameroon and other african countries. | 2011 | 22047173 |
| malaria vectors and transmission in an area deforested for a new international airport in southern cameroon. | nsimalen, a village in southern cameroon, has been deforested over a surface of 370 hectares for the construction of the new yaounde international airport (cameroon). mosquitoes night catches on human bait were performed over a year in two hamlets of this village, one adjoining the airport and the other situated 3 kilometers off the deforested area. the aim of the survey was to observe malaria vectors and transmission around the airport and to record malaria epidemiological changes resulting fro ... | 1995 | 7794062 |
| early sporogonic development in local vectors of plasmodium falciparum in rural cameroon. | in ongoing studies on experimental transmission of plasmodium falciparum in the city of yaounde gametocyte carriers are daily being identified among dispensary patients with malaria-like complaints. this species comprises 93% of all parasitemias and because of the selection criteria most patients have it as a recent infection. 17% of all p. falciparum-positives carry detectable gametocytes with little difference between youngsters and adults. blood of adult carriers is taken and infection of ano ... | 1994 | 7565124 |
| [urban malaria in yaounde (cameroon). 2. entomologic study in 2 suburban districts]. | a one year entomological survey was carried out to precise the malaria vectors and the malaria transmission in yaounde, the cameroon capital (800,000 inhabitants). the study was done in two districts not yet fully urbanized: nkol bikok and nkol bisson. the latter is located at the periphery and has a pool. anopheles gambiae was the only human malaria vector. its agressivity for man depended on the urbanization of the district. annual man biting rate was 284 in nkol bikok and 1,813 in nkol bisson ... | 1992 | 1596961 |
| genome-wide analysis of transcriptomic divergence between laboratory colony and field anopheles gambiae mosquitoes of the m and s molecular forms. | our knowledge of anopheles gambiae molecular biology has mainly been based on studies using inbred laboratory strains. differences in the environmental exposure of these and natural field mosquitoes have inevitably led to physiological divergences. we have used global transcript abundance analyses to probe into this divergence, and identified transcript abundance patterns of genes that provide insight on specific adaptations of caged and field mosquitoes. we also compared the gene transcript abu ... | 2010 | 20738426 |
| transmission of plasmodium falciparum in urban yaoundé, cameroon, is seasonal and age-dependent. | data on malaria transmission intensity and prevalences of asexual parasites and of gametocytes were obtained in an urban district of yaoundé, cameroon. the transmission level from mosquito to human was determined by indoor night capture of mosquitoes on human volunteers, revealing a calculated entomological inoculation rate of 34 infectious bites per person per year. only anopheles gambiae and a. funestus contributed to malaria transmission and their distribution was seasonal. cross-sectional su ... | 2003 | 15259460 |