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

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Ekoko, Wolfgang Eyisap, Awono-Ambene, Parfait, Bigoga, Jude, Mandeng, Stanislas, Piameu, Michael, Nvondo, Narcisse, Toto, Jean-Claude, Nwane, Philippe, Patchoke, Salomon, Mbakop, Lili Ranaise, Binyang, Jerome Achille, Donnelly, Martin ORCID: https://orcid.org/0000-0001-5218-1497, Kleinschmidt, Immo, Knox, Tessa, Mbida, Arthur Mbida, Dongmo, Alain, Fondjo, Etienne, Mnzava, Abraham and Etang, Josiane (2019) 'Patterns of anopheline feeding/resting behaviour and Plasmodium infections in North Cameroon, 2011–2014: implications for malaria control'. Parasites & Vectors, Vol 12, Issue 1.

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Abstract

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 (χ2 < 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.

Item Type: Article
Subjects: QX Parasitology > Protozoa > QX 135 Plasmodia
QX Parasitology > Insects. Other Parasites > QX 515 Anopheles
WA Public Health > Health Problems of Special Population Groups > WA 395 Health in developing countries
WC Communicable Diseases > Tropical and Parasitic Diseases > WC 750 Malaria
Faculty: Department: Biological Sciences > Vector Biology Department
Digital Object Identifer (DOI): https://doi.org/10.1186/s13071-019-3552-2
Depositing User: Stacy Murtagh
Date Deposited: 14 Jun 2019 10:00
Last Modified: 16 Sep 2019 09:18
URI: https://archive.lstmed.ac.uk/id/eprint/11039

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