CD79A and Flavivirus Infections: Moreover, the results leading to a specificity of 88% (6 sera found positive by the Platelia Dengue IgA Capture among the non-dengue group) could be correlated either with a previous dengue infection, preceding the recent dengue-like syndrome associated with these clinical samples, or with a cross-reaction potentially induced by another etiological agent, because of a higher risk of exposure to multiple flavivirus infections in French Guiana.