Targeted Active Case Detection Among High Risk Populations in Southern Lao Peoples Democratic Republic

Summary

This study assesses the effectiveness of targeted active case detection among high-risk populations in Southern Lao Peoples Democratic Republic (PDR). The investigators hypothesize that active case detection using the next generation of HRP-2 rapid diagnostic tests (RDTs) can help bridge gaps in identification of high-risk asymptomatic individuals with low density parasitemia, allowing for targeting of this reservoir and thereby reducing transmission. The investigators hypothesize that active case detection (testing and treating positive cases) with these RDTs will lead to a reduction in P. falciparum transmission.

Timeline

Start

2017-11-28

Primary completion

2018-11-30

Completion

2018-12-31

Publications

• Background Tiono AB, Ouedraogo A, Ogutu B, Diarra A, Coulibaly S, Gansane A, Sirima SB, O'Neil G, Mukhopadhyay A, Hamed K. A controlled, parallel, cluster-randomized trial of community-wide screening and treatment of asymptomatic carriers of Plasmodium falciparum in Burkina Faso. Malar J. 2013 Feb 27;12:79. doi: 10.1186/1475-2875-12-79.
• Background Mosha JF, Sturrock HJ, Greenhouse B, Greenwood B, Sutherland CJ, Gadalla N, Atwal S, Drakeley C, Kibiki G, Bousema T, Chandramohan D, Gosling R. Epidemiology of subpatent Plasmodium falciparum infection: implications for detection of hotspots with imperfect diagnostics. Malar J. 2013 Jul 1;12:221. doi: 10.1186/1475-2875-12-221.
• Background Cook J, Xu W, Msellem M, Vonk M, Bergstrom B, Gosling R, Al-Mafazy AW, McElroy P, Molteni F, Abass AK, Garimo I, Ramsan M, Ali A, Martensson A, Bjorkman A. Mass screening and treatment on the basis of results of a Plasmodium falciparum-specific rapid diagnostic test did not reduce malaria incidence in Zanzibar. J Infect Dis. 2015 May 1;211(9):1476-83. doi: 10.1093/infdis/jiu655. Epub 2014 Nov 26.
• Background Hustedt J, Canavati SE, Rang C, Ashton RA, Khim N, Berne L, Kim S, Sovannaroth S, Ly P, Menard D, Cox J, Meek S, Roca-Feltrer A. Reactive case-detection of malaria in Pailin Province, Western Cambodia: lessons from a year-long evaluation in a pre-elimination setting. Malar J. 2016 Mar 1;15:132. doi: 10.1186/s12936-016-1191-z.
• Background Parker DM, Landier J, von Seidlein L, Dondorp A, White L, Hanboonkunupakarn B, Maude RJ, Nosten FH. Limitations of malaria reactive case detection in an area of low and unstable transmission on the Myanmar-Thailand border. Malar J. 2016 Nov 25;15(1):571. doi: 10.1186/s12936-016-1631-9.
• Background Hoyer S, Nguon S, Kim S, Habib N, Khim N, Sum S, Christophel EM, Bjorge S, Thomson A, Kheng S, Chea N, Yok S, Top S, Ros S, Sophal U, Thompson MM, Mellor S, Ariey F, Witkowski B, Yeang C, Yeung S, Duong S, Newman RD, Menard D. Focused Screening and Treatment (FSAT): a PCR-based strategy to detect malaria parasite carriers and contain drug resistant P. falciparum, Pailin, Cambodia. PLoS One. 2012;7(10):e45797. doi: 10.1371/journal.pone.0045797. Epub 2012 Oct 1.
• Background Cotter C, Sturrock HJ, Hsiang MS, Liu J, Phillips AA, Hwang J, Gueye CS, Fullman N, Gosling RD, Feachem RG. The changing epidemiology of malaria elimination: new strategies for new challenges. Lancet. 2013 Sep 7;382(9895):900-11. doi: 10.1016/S0140-6736(13)60310-4. Epub 2013 Apr 15.
• Background World Health Organization. Strategy for malaria elimination in the Greater Mekong Subregion: 2015-2030 [Internet]. Geneva: Global Malaria Program, WHO; 2015. Available: http://iris.wpro.who.int/bitstream/handle/10665.1/10945/9789290617181_eng.pdf
• Background World Health Organization Regional Office for South-East Asia (SEARO). Approaches for mobile and migrant populations in the context of malaria multi-drug resistance and malaria elimination in the Greater Mekong Subregion [Internet]. Thailand; 2016. Available: http://apps.who.int/iris/bitstream/10665/204351/2/Approaches_%20mobile_migrant_populations.pdf
• Background Center for Malariology, Parasitology, and Entomology, Lao PDR. Lao PDR Malaria National Strategic Plan 2016-2020. Vientiane, Lao PDR: Ministry of Health, Lao PDR; 2015.
• Lover AA, Dantzer E, Hocini S, Estera R, Rerolle F, Smith JL, Hwang J, Gosling R, Yukich J, Greenhouse B, Jacobson J, Phetsouvanh R, Hongvanthong B, Bennett A. Study protocol for a cluster-randomized split-plot design trial to assess the effectiveness of targeted active malaria case detection among high-risk populations in Southern Lao PDR (the AcME-Lao study). Gates Open Res. 2019 Dec 17;3:1730. doi: 10.12688/gatesopenres.13088.1. eCollection 2019.

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