ArticlePLoS neglected tropical diseases2025
Recombinant antigen-based lateral flow tests for the detection of Strongyloides stercoralis infection.
Article in PLoS neglected tropical diseases, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed.
- Development of Recombinase Polymerase Amplification and CRISPR-Cas12a-Enhanced Isothermal Amplification Assays for Strongyloides stercoralis DNA Detection: A Pilot Study.The American journal of tropical medicine and hygiene · 2026Article
- Design and evaluation of a novel fusion antigen for diagnosing human strongyloidiasis: An immunoinformatics approach.PloS one · 2026Article
- Diagnostic performance of a Strongyloides IgG4 Rapid Test in detecting human Strongyloides stercoralis infection.Parasites & vectors · 2025Article
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2 authors.
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Abstract
backgroundStrongyloidiasis is a serious public health issue affecting millions of people worldwide particularly in tropical and subtropical regions. The laboratory diagnosis of strongyloidiasis is often serologically based, typically by enzyme linked immunosorbent assays (ELISA). However, the use of these assays at the point of care requires significantly different approaches for serologic measurements. We sought to determine the diagnostic performance of 2 prototype lateral flow tests alongside the Strongy Detect ELISAs (IgG and IgG4) that uses a cocktail of 2 Ss-specific recombinant antigens, Ss-NIE and Ss-IR.
methodsThe diagnostic performance of the Rapid Diagnostic Tests (RDTs) and ELISAs was determined by using stored serum samples from 17 healthy volunteers, 77 individuals known to be stool positive for Strongyloides stercoralis (Ss), 44 Ss stool-negative individuals but positive for Loa loa (n=32), or other helminths (n=12) (hookworm infection, Schistosoma mansoni, or Wuchereria bancrofti). Concordance between the RDTs and ELISAs was calculated with the Cohen's kappa statistic (κ).
resultsThe sensitivity and specificity of the IgG RDT was 95% (95% CI; 87.84 to 98.64%) and 94% (95% CI; 84.99 to 98.30%) respectively. The IgG4 RDT showed a sensitivity of 86.5% (95% CI; 77.63 to 92.83%) with 100% (95% CI; 94.13 to 100%) specificity. The IgG-based ELISA showed 100% (95% CI; 95.6-100%) sensitivity and 96% specificity (95% CI; 91.7-98%), whereas the IgG4-based ELISA revealed a 90% (95% CI; 81-94.3%) sensitivity with 100% (95% CI; 97.8-100%) specificity. Concordance between the RDTs and the ELISAs was excellent with κ = 0.94 (95% CI; 0.88-1.0%) for the IgGs and κ = 0.89 (95% CI; 0.81-0.97%) for IgG4 assays.
conclusionGiven the high degree of sensitivity and specificity of both the IgG- and IgG4-based RDT, either of these would be useful in assessing Ss seropositivity in population-based studies and in screening patients at the point of contact.
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