Performance of Antibody-Detection Tests for Human Melioidosis: A Systematic Review and Meta-analysis.

Melioidosis is a life-threatening infectious disease caused by the bacterium Burkholderia pseudomallei. Although culture is the gold standard for diagnosing melioidosis, it is time-consuming and delays timely treatment. Non-culture-based diagnostic techniques are interesting alternatives for the rapid detection of melioidosis. This systematic review provides an overview of the performance of antibody-detection tests for melioidosis. A thorough literature search was conducted in two databases to identify relevant studies published until 31 December 2023. Among the 453 studies identified, 29 were included for further analysis. Various antibody-detection methods have been developed, primarily enzyme-linked immunosorbent assays (ELISAs). Recombinant outer membrane protein A-(OmpA)-specific immunoglobulin G (IgG), immunoglobulin A (IgA), immunoglobulin M (IgM), and immunoglobulin D (IgD) exhibited the highest accuracy, with a sensitivity of 95.0% and a specificity of 98.0% in ELISA. Furthermore, immunochromatographic testing has emerged as a promising rapid diagnostic test (RDT), with haemolysin co-regulated protein 1 (Hcp1) demonstrating significant accuracy, a sensitivity of 88.3%, and a specificity of 91.6%. Additionally, IgG against Burkholderia invasion protein D (BipD) showed excellent accuracy, with a sensitivity of 100.0% and a specificity of 100.0% in surface plasmon resonance assay. Combining multiple antigens or employing different detection techniques can enhance the accuracy of melioidosis diagnosis.