Human anti-CHIKV antibody-capture ELISAs utilizing EILV/CHIKV as antigen to detect either (A) IgM or (B) IgG antibodies (both measured over a range of serum dilutions, red).

<p>Human serum samples that were antibody-positive for either DENV or VEEV but negative for CHIKV by HI were included as negative controls. Mean and standard deviations of 2 replicates are reported.