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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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Patterns of anopheline feeding/resting behaviour and Plasmodium infections in North Cameroon, 2011–2014: implications for malaria control
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Journal Article
Patterns of anopheline feeding/resting behaviour and Plasmodium infections in North Cameroon, 2011–2014: implications for malaria control
2019
Overview
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.
Publisher
BioMed Central,BioMed Central Ltd,Springer Nature B.V,BMC
Subject
/ Analysis
/ Animals
/ Biomedical and Life Sciences
/ Blood
/ Cameroon
/ cattle
/ Children
/ Communicable Disease Control
/ Control
/ Feeding
/ Health
/ Long-lasting insecticidal nets
/ Malaria
/ Malaria, Falciparum - epidemiology
/ Malaria, Falciparum - prevention & control
/ Meals
/ Mosquito Vectors - parasitology
/ Mosquito Vectors - physiology
/ Prevalence studies (Epidemiology)
/ Protozoan Proteins - genetics
/ Sheep
/ Veterinary Medicine/Veterinary Science
/ Virology
