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Utilizing the ultrasensitive Schistosoma up-converting phosphor lateral flow circulating anodic antigen(UCP-LF CAA)assay for sample pooling-strategies

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Infectious Diseases of Poverty 2017年第1期6卷 1379-1391页

作者： Paul L.A.M.Corstjens Pytsje T.Hoekstra Claudia J.de Dood Govert J.van Dam Department of Molecular Cell Biology Leiden University Medical CenterP.O.Box 96002300RCLeidenThe Netherlands Department of Parasitology Leiden University Medical CenterP.O.Box 96002300RCLeidenThe Netherlands

Background:Methodological applications of the high sensitivity genus-specific Schistosoma CAA strip test,allowing detection of single worm active infections(ultimate sensitivity),are discussed for efficient utilization in sample pooling *** relevant cost reduction,pooling of samples rather than individual testing can provide valuable data for large scale mapping,surveillance,and ***:The laboratory-based CAA strip test utilizes luminescent quantitative up-converting phosphor(UCP)reporter particles and a rapid user-friendly lateral flow(LF)assay *** test includes a sample preparation step that permits virtually unlimited sample concentration with urine,reaching ultimate sensitivity(single worm detection)at 100%*** facilitates testing large urine pools from many individuals with minimal loss of sensitivity and *** test determines the average CAA level of the individuals in the pool thus indicating overall worm burden and *** requiring test results at the individual level,smaller pools need to be analysed with the pool-size based on expected prevalence or when unknown,on the average CAA level of a larger group;CAA negative pools do not require individual test results and thus reduce the number of ***:Straightforward pooling strategies indicate that at sub-population level the CAA strip test is an efficient assay for general mapping,identification of hotspots,determination of stratified infection levels,and accurate monitoring of mass drug administrations(MDA).At the individual level,the number of tests can be reduced *** low endemic settings as the pool size can be increased as opposed to prevalence ***:At the sub-population level,average CAA concentrations determined in urine pools can be an appropriate measure indicating worm *** strategies allowing this type of large scale testing are feasible with the various CAA strip test formats and do not affect sens

关键词： Schistosomiasis Diagnostics Sample pooling Mass drug administration circulating anodic antigen Lateral flow Strip test Up-converting reporter particle UCP-LF CAA

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