Resting Behaviour of Deltamethrin-Resistant Malaria Vectors, Anopheles arabiensis and Anopheles coluzzii, from North Cameroon: Upshots from a Two-Level Ordinary Logit Model

Etang, Josiane; Nono, Betrand Fesuh; Awono-Ambene, Parfait; Bigoga, Jude D.; Eyisap, Wolfgang Ekoko; Piameu, Michael; Toto, Eugène Patrice Ndong Nguema Jean-Claude; Gwet, Henri; Fondjo, Étienne; Mnzava, Abraham

doi:10.5772/65463

Cited by 2 publications

(2 citation statements)

References 41 publications

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“…Recent studies conducted in West and East Africa have shown that indoor application of insecticides may induce intraspecific behavioural shifts towards early biting, exophagic biting and exophilic resting behaviour in malaria-transmitting mosquitoes [130,131,133]. Similarly, current studies conducted in Central Africa showed a comparable shift towards exophilic resting behaviour [134]. Mathematical modelling and field evidences have proved that these shifts in blood-feeding behaviour could threaten and impactonthecurrentcontrolprogrammes [132,135].…”

Section: Behavioural Resistance To Insecticides Used In Public Healthmentioning

confidence: 81%

Insecticide Resistance in Malaria Vectors: An Update at a Global Scale

Riveron¹,

Tchouakui²,

Mugenzi³

et al. 2018

Towards Malaria Elimination - A Leap Forward

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Malaria remains the deadliest vector-borne disease in the world. With nearly half of the world's population at risk, 216 million people suffered from malaria in 2016, with over 400,000 deaths, mainly in sub-Saharan Africa. Important global efforts have been made to eliminate malaria leading to significant reduction in malaria cases and mortality in Africa by 42% and 66%, respectively. Early diagnosis, improved drug therapies and better health infrastructure are key components, but this extraordinary success is mainly due the use of long-lasting insecticidal nets (LLINs) and indoor residual sprayings (IRS) of insecticide. Unfortunately, the emergence and spread of resistance in mosquito populations against insecticides is jeopardising the effectiveness of the most efficient malaria control interventions. To help establish suitable resistance management strategies, it is vital to better understand the distribution of resistance, its mechanisms and impact on effectiveness of control interventions and malaria transmission. In this chapter, we present the current status of insecticide resistance worldwide in main malaria vectors as well as its impact on malaria transmission, and discuss the molecular mechanisms and future perspectives.

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Section: Behavioural Resistance To Insecticides Used In Public Healthmentioning

confidence: 81%

Insecticide Resistance in Malaria Vectors: An Update at a Global Scale

Riveron¹,

Tchouakui²,

Mugenzi³

et al. 2018

Towards Malaria Elimination - A Leap Forward

View full text Add to dashboard Cite

show abstract

“…The synchronous presence of the four species across the collection methods may be related to the heterogeneity of their populations in terms of frequencies of physiological resistance to deltamethrin. Etang et al [49] previously reported a significant dependence of indoor relative densities of An. arabiensis and An.…”

Section: Discussionmentioning

confidence: 99%

Patterns of anopheline feeding/resting behaviour and Plasmodium infections in North Cameroon, 2011–2014: implications for malaria control

et al. 2019

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Background Effective malaria control relies on evidence-based interventions. Anopheline behaviour and Plasmodium infections were investigated in North Cameroon, following long-lasting insecticidal net (LLIN) distribution in 2010. Methods During four consecutive years from 2011 to 2014, adult mosquitoes were collected indoors, outdoors and in exit traps across 38 locations in the Garoua, Pitoa and Mayo-Oulo health districts. Anophelines were morphologically and molecularly identified, then analysed for blood meal origins and Plasmodium falciparum circumsporozoite protein ( Pf -CSP). Blood from children under 5 years-old using LLINs was examined for Plasmodium infections. Results Overall, 9376 anophelines belonging to 14 species/sibling species were recorded. Anopheles gambiae ( s.l. ) [ An. arabiensis (73.3%), An. coluzzii (17.6%) and An. gambiae ( s.s. ) (9.1%)] was predominant (72%), followed by An. funestus ( s.l. ) (20.5%) and An. rufipes (6.5%). The recorded blood meals were mainly from humans (28%), cattle (15.6%) and sheep (11.6%) or mixed (45%). Pf -CSP rates were higher indoors (3.2–5.4%) versus outdoors (0.8–2.0%), and increased yearly ( χ 2 < 18, df = 10, P < 0.03). Malaria prevalence in children under 5 years-old, in households using LLINs was 30% (924/3088). Conclusions The present study revealed the variability of malaria vector resting and feeding behaviour, and the persistence of Plasmodium infections regardless the use of LLINs. Supplementary interventions to LLINs are therefore needed to sustain malaria prevention in North Cameroon.

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Resting Behaviour of Deltamethrin-Resistant Malaria Vectors, Anopheles arabiensis and Anopheles coluzzii, from North Cameroon: Upshots from a Two-Level Ordinary Logit Model

Cited by 2 publications

References 41 publications

Insecticide Resistance in Malaria Vectors: An Update at a Global Scale

Insecticide Resistance in Malaria Vectors: An Update at a Global Scale

Patterns of anopheline feeding/resting behaviour and Plasmodium infections in North Cameroon, 2011–2014: implications for malaria control

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