Fig. 2From: Short- and long-term humoral immune response against Yersinia pestis in plague patients, MadagascarKinetics of anti- F1 IgG in sera collected from suspected plague patients enrolled in Madagascar, 2005–2007 (n = 6). Abbreviations: IgG, immunoglobulin G; ELISA, enzyme-linked immunosorbent assay; OD: Optical density measured at 600 nm (OD threshold = 0.350); F1RDT: Rapid Diagnostic Test for Y. pestis F1 antigen detectionBack to article page