Culex species are widespread across Cameroon and responsible for high burden of nuisance in most urban settings. However, despite their nuisance, they remain less studied compared to anophelines. The present study aimed assess distribution, susceptibility insecticide, bionomics role Lymphatic Filariasis (LF) transmission the city Yaoundé.Mosquito collections were conducted from March December 2017 using Centre Disease Control light traps (CDC-LT), human landing catches (HLC) larval...

Malaria prevention in Cameroon mainly relies on the use of ITNs. Although several free distribution campaigns treated nets have been conducted across country, bed net usage remains very low. A household survey was to assess knowledge population and practices affecting city Yaoundé.A community-based descriptive cross-sectional January 2017 32 districts Yaoundé. Parents (household head, spouse or an elder representative) who consented study, were interviewed using a structured pre-tested...

Abstract Culex mosquitoes particularly quinquefasciatus are important arboviral and filariasis vectors, however despite this epidemiological role, there is still a paucity of data on their bionomics. The present study was undertaken to assess the insecticide resistance status Cx. populations from four districts Yaoundé (Cameroon). All except one displayed high bendiocarb malathion with mortalities ranging 0 89% while intensity against both permethrin deltamethrin recorded. Molecular analyses...

The emergence of insecticide resistance in Aedes mosquitoes could pose major challenges for arboviral-borne disease control. In this paper, susceptibility level and mechanisms were assessed aegypti (Linnaeus, 1762) albopictus (Skuse, 1894) from urban settings Cameroon. F1 progeny collected Douala, Yaoundé Dschang August to December 2020 was tested using WHO tube assays with four insecticides: deltamethrin 0.05%, permethrin 0.75%, DDT 4% bendiocarb 0.1%. TaqMan, qPCR RT-qPCR used detect kdr...

The effectiveness of Long-Lasting Insecticidal Nets and Indoor Residual Spraying in malaria vector control is threatened by resistance to insecticides. Knowledge mosquito habitats patterns insecticide would facilitate the development appropriate strategies. Therefore, we investigated An. coluzzii larval insecticides Manoka rural island area compared with Youpwe suburban inland area, Douala VI II districts respectively. Anopheline larvae pupae were collected from open water bodies December...

Improving house structure is known to limit contact between humans and mosquitoes reduce malaria transmission risk. In the present study, influence of characteristics on mosquito distribution risk was assessed in city Yaoundé.The study conducted from March 2017 June 2018 32 districts Yaoundé. Mosquito collections were performed indoor 10 15 houses per district using CDC light traps. A total 467 houses, selected randomly used. pretested questionnaire submitted participants collect information...

<ns4:p><ns4:bold>Background:</ns4:bold>Malaria remains a major public health problem in Cameroon; however, despite reports on the adaptation of anopheline species to urban habitats, there is still not enough information malaria transmission pattern settings. In frame larval control trial city Yaoundé, we conducted baseline surveys assess dynamics this city.</ns4:p><ns4:p><ns4:bold>Methods:</ns4:bold>Adult mosquitoes were collected indoors and outdoors using CDC light traps human landing...

Abstract Background The rapid and unplanned urbanization of African cities is considered to increase the risk urban malaria transmission. present study objective was assess factors influencing spatio-temporal distribution Anopheles gambiae s.l. larvae in city Yaoundé, Cameroon. Methods All water bodies were checked once every 2 months for presence mosquito from March 2017 May 2018 32 districts Yaoundé. Physico-chemical characteristics including size, depth, turbidity, pH, temperature,...

Malaria remains a major public health problem in Cameroon. Critical steps to improve disease control include assessing human population adherence vector interventions, especially areas with different cultural backgrounds. The present study seeks assess the knowledge, attitude, and practices (KAP) of populations towards malaria prevention four ecoepidemiological settings A cross-sectional KAP survey was conducted from August September 2019 households localities Kaélé, Tibati, Bertoua,...

Introduction: The surveillance of mosquito vectors is important for the control arboviruses diseases worldwide. Detailed information on bionomics and distribution their main vectors, Aedes aegypti albopictus, essential assessing disease transmission risk better planning interventions. Methods: Entomological surveys were carried out from November 2019 to 2020 in six localities Yaoundé city following a transect urban rural settings: two (Obili, Mvan), peri-urban (Simbock, Ahala) areas (Lendom,...

Abstract The rapid expansion of insecticide resistance and outdoor malaria transmission are affecting the efficacy current control measures. In urban settings, where is focal breeding habitats few, fixed findable, addition anti-larval measures could be efficient for vector control. But field evidences this approach remains scarce. Here we provide findings a randomized-control larviciding trial conducted in city Yaoundé that support approach. A two arms random design including 26 clusters 2...

The contribution of Anopheles funestus to malaria transmission in the urban environment is still not well documented. present study assesses implication An. two districts, Nsam and Mendong, city Yaoundé. Adult mosquitoes were collected using Centers for Disease Control Prevention miniature light traps (CDC-LT) human landing catches from April 2017 March 2018 identified morphologically species level. Those belonging gambiae complex group further processed by PCR identify members each...

Although Culex species are considered to be equally affected by control measures targeting malaria vectors, there is still not enough evidence of the impact interventions such as larviciding on distribution these mosquito species. The present study assessed a trial vectors in city Yaoundé, Cameroon. A cluster randomized comparing 13 treated clusters and untreated was implemented. Data were collected at baseline during intervention, from March 2017 November 2020. microbial larvicide VectoMax...

Arbovirus diseases represent a significant public health problem in Cameroon and vector surveillance is key component of prevention strategies. However, there still not enough evidence the efficacy different sampling methods used to monitor Aedes mosquito population dynamic epidemiological settings. The present study provides data on evaluation ovitraps adult city Yaoundé its close vicinity. Entomological surveys were carried out from February 2020 March 2021 two urban (Obili, Mvan),...

Malaria remains a major public health concern in Cameroon. Understanding vector distribution and malaria transmission dynamics is of paramount importance for evaluating the performance control strategies. This study assesses patterns four eco-epidemiological settings Cameroon.Adult mosquitoes were collected using Human Landing Catches (HLC) once every 4 months from August 2019 to November 2021 Kaélé, Tibati, Santchou Bertoua. Mosquitoes sorted by genus Anopheles gambiae sensu lato (s.l.)...

The spread of pyrethroid resistance in malaria vectors is a major threat affecting the performance current control measures. However, there still not enough information on profile mosquitoes to carbamates and organophosphates which could be used as alternatives. present study assessed Anopheles gambiae s.l. bendiocarb malathion, at phenotypic molecular levels, different eco-epidemiological settings Cameroon. were collected from four across country their susceptibility level malathion was...

Rapid emergence and spread of pyrethroid resistance in Anopheles gambiae populations is among the main factors affecting malaria vector control Cameroon, but there still not enough data on exact status across Cameroon. The present study assessed profile different eco-epidemiological settings Susceptibility bioassay tests were performed with F0 An. females aged three to five days. Mosquito susceptibility both permethrin deltamethrin was assessed. Species s.l. complex identified using...

Background Urban malaria is becoming a major public health concern in cities Cameroon. To improve vector control, pilot larviciding trial was conducted to assess its impact on mosquito density and transmission intensity Yaoundé. The present study investigated perceptions practices of communities control during the implemented Methods Quantitative qualitative data were collected non-intervention intervention areas. three cross-sectional surveys using structured pre-tested questionnaire while...

The current study aimed at assessing the coverage and bio efficacy of Long Lasting Insecticidal Nets (LLINs) against Anopheles (An.) coluzzii, main malaria vector in Manoka Youpwe (Littoral Cameroon), known as being resistant to pyrethroid insecticides.A cross sectional LLINs survey was conducted island rural area urban Douala town between December 2014 April 2015.The bio-efficacy field collected An.gambiae.s.l.from Kisumu laboratory colony two samples assessed using WHO cone test.Mosquito...

Abstract The rapid expansion of insecticide resistance and outdoor malaria transmission are affecting the efficacy current control measures. In urban settings, where is focal breeding habitats few, fix findable, addition anti-larval measures could be efficient for vector control. But field evidences this approach remains scarce. Here we provide findings a randomized-control larviciding trial conducted in city Yaoundé that support approach. A two arms random design including 26 clusters 2 to...