Operational Assessment of Long-Lasting Insecticidal Nets by Using an Anopheles Salivary Biomarker of Human-Vector Contact.

Published

Journal Article

The widespread implementation of long-lasting insecticidal nets (LLINs) is a major intervention method for malaria control. Although the LLINs coverage increases, information available on the physical integrity (PI) of implemented LLINs is incomplete. This study aimed to validate human IgG antibody (Ab) response to Anopheles gSG6-P1 salivary peptide antigen, previously demonstrated as a pertinent biomarker of human exposure to Anopheles bites, for evaluating the PI of LLINs in field conditions. We analyzed data from 262 randomly selected children (< 5 years of age) in health districts of Benin. Anti-gSG6-P1 IgG responses were assessed and compared with the PI of LLINs that these same children slept under, and evaluated by the hole index (HI). Specific IgG levels were positively correlated to LLINs HI (r = 0.342; P < 0.0001). According to antipeptide IgG level (i.e., intensity of vector exposure), two categories of LLINs PI were defined: 1) group "HI: [0, 100]" corresponding to LLINs with "good" PI and 2) "HI > 100" corresponding to LLINs with "bad" PI. These results suggest that human Ab response to salivary peptide could be a complementary tool to help defining a standardized threshold of efficacy for LLINs under field use.

Full Text

Duke Authors

Cited Authors

  • Noukpo, MH; Damien, GB; Elanga-N'Dille, E; Sagna, AB; Drame, PM; Chaffa, E; Boussari, O; Corbel, V; Akogbéto, M; Remoue, F

Published Date

  • December 2016

Published In

Volume / Issue

  • 95 / 6

Start / End Page

  • 1376 - 1382

PubMed ID

  • 27928087

Pubmed Central ID

  • 27928087

Electronic International Standard Serial Number (EISSN)

  • 1476-1645

International Standard Serial Number (ISSN)

  • 0002-9637

Digital Object Identifier (DOI)

  • 10.4269/ajtmh.15-0541

Language

  • eng