학술논문
The impact of pyrethroid-pyriproxyfen and pyrethroid-chlorfenapyr long-lasting insecticidal nets on density of primary malaria vectors Anopheles gambiae s.s. and Anopheles coluzzii in Benin: a secondary analysis of a cluster randomised controlled trial
Document Type
article
Author
Boulais Yovogan; Arthur Sovi; Armel Djènontin; Constantin J. Adoha; Bruno Akinro; Manfred Accrombessi; Edouard Dangbénon; Come Z. Koukpo; Zul-Kifl Affolabi; Prudenciène A. Agboho; Casimir Dossou Kpanou; Landry Assongba; Antoine Abel Missihoun; Tatchémè Filémon Tokponnon; Clément Agbangla; Germain Gil Padonou; Louisa A. Messenger; Corine Ngufor; Jackie Cook; Martin C. Akogbéto; Natacha Protopopoff
Source
Parasites & Vectors, Vol 17, Iss 1, Pp 1-12 (2024)
Subject
Language
English
ISSN
1756-3305
Abstract
Abstract Background Long-lasting insecticidal nets (LLINs) may have different impacts on distinct mosquito vector species. We assessed the efficacy of pyrethroid-pyriproxyfen and pyrethroid-chlorfenapyr LLINs on the density of Anopheles gambiae s.s. and An. coluzzii compared to pyrethroid-only nets in a three-arm cluster randomised control trial in Benin. Methods Indoor and outdoor collections of adult mosquitoes took place in 60 clusters using human landing catches at baseline and every 3 months for 2 years. After morphological identification, around 15% of randomly selected samples of An. gambiae s.l. were dissected to determine parity, species (using PCR). Results Overall, a total of 46,613 mosquito specimens were collected at baseline and 259,250 in the eight quarterly collections post-net distribution. Post-net distribution, approximately 70% of the specimens of An. gambiae s.l. speciated were An. coluzzii, while the rest were mostly composed of An. gambiae s.s. with a small proportion (