Please use this identifier to cite or link to this item: http://repository.li.mahidol.ac.th/dspace/handle/123456789/46080
Title: Anopheles salivary biomarker as a proxy for estimating plasmodium falciparum malaria exposure on the Thailand-Myanmar border
Authors: Phubeth Ya-Umphan
Dominique Cerqueira
Gilles Cottrell
Daniel M. Parker
Freya J.I. Fowkes
Francois Nosten
Vincent Corbel
Melbourne School of Population and Global Health
Universite Paris Descartes
IRD Centre de Montpellier
Monash University
Mahidol University
Nuffield Department of Clinical Medicine
University of California, Irvine
Burnet Institute
Keywords: Immunology and Microbiology;Medicine
Issue Date: 1-Jan-2018
Citation: American Journal of Tropical Medicine and Hygiene. Vol.99, No.2 (2018), 350-356
Abstract: Copyright © 2018 by The American Society of Tropical Medicine and Hygiene. Timely identification and treatment of malaria transmission “hot spots” is essential to achieve malaria elimination. Here we investigate the relevance of using an Anopheles salivary biomarker to estimate Plasmodium falciparum malaria exposure risk along the Thailand-Myanmar border to guide malaria control. Between May 2013 and December 2014, > 9,000 blood samples collected in a cluster randomized control trial were screened with serological assays to measure the antibody responses to Anopheles salivary antigen (gSG6-P1) and P. falciparum malaria antigens (circumsporozoite protein, merozoite surface protein 119 [MSP-119]). Plasmodium falciparum infections were monitored through passive and active case detection. Seroprevalence to gSG6-P1, MSP-119, and CSP were 71.8% (95% Confidence interval [CI]: 70.9, 72.7), 68.6% (95% CI: 67.7, 69.5), and 8.6% (95% CI: 8.0, 9.2), respectively. Multivariate analysis showed that individuals with the highest Ab response to gSG6-P1 had six times the odds of being positive to CSP antigens (P < 0.001) and two times the odds of P. falciparum infection compared with low gSG6-P1 responders (P = 0.004). Spatial scan statistics revealed the presence of clusters of gSG6-P1 that partially overlapped P. falciparum infections. The gSG6-P1 salivary biomarker represents a good proxy for estimating P. falciparum malaria risk and could serve to implement hot spot-targeted vector control interventions to achieve malaria elimination.
URI: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85051075259&origin=inward
http://repository.li.mahidol.ac.th/dspace/handle/123456789/46080
ISSN: 00029637
Appears in Collections:Scopus 2018

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