PO 8418 NEW MALARIA EPIDEMIOLOGY IN COASTAL LAGOON OF BENIN: PLASMODIUM INFECTION IN ANOPHELES MELAS

IntroductionMalaria is a worldwide disease affecting many people particularly in the tropical and sub-tropical areas. It is caused by Plasmodium parasites and essentially transmitted by female mosquitoes belonging to the Anopheles genus. Our understanding of the infectivity of these vectors to Plasm...

Full description

Saved in:
Bibliographic Details
Published in:BMJ global health 2019-04, Vol.4 (Suppl 3), p.A35-A35
Main Authors: Adigbonon, Claudiane, Assogba, Benoît S, Djogbenou, Luc S
Format: Article
Language:English
Subjects:
Epidemiology
Erythrocytes
Global health
Malaria
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:IntroductionMalaria is a worldwide disease affecting many people particularly in the tropical and sub-tropical areas. It is caused by Plasmodium parasites and essentially transmitted by female mosquitoes belonging to the Anopheles genus. Our understanding of the infectivity of these vectors to Plasmodium is necessary to design sustainable strategies for their control. This aspect remains unknown in the coastal and lagoon area of Benin where Anopheles melas and Anopheles coluzzii are sympatric. This study aims to investigate the infectivity of these two vectors to Plasmodium to understand their role in malaria transmission in southern Benin.MethodsInsecticide spray catch technique was used to collect females in 80 houses randomly selected in our study site. Three hundred and twenty (320) females were identified using PCR–species technique, Plasmodium infection was determined by the TaqMan method during the dry season. This assay detects all four malaria-causing species and discriminates Plasmodium falciparum from Plasmodium ovale, Plasmodium vivax and Plasmodium malariae (OVM).ResultsDuring the dry season, the sporozoïte rates were 0.2% and 0.3% for Anopheles melas and Anopheles coluzzii, respectively. However, we observed that positivity to the OVM (one of Plasmodium ovale, Plasmodium vivax and Plasmodium malariae species) was significantly higher in Anopheles melas (95%) than in Anopheles coluzzii (33.33%) (Chi-sq=15 857, df=1, p
ISSN:2059-7908
2059-7908
DOI:10.1136/bmjgh-2019-EDC.90