Indirect ELISAs for detecting serum IgG, IgM and IgA1 against DHAV-1 were developed.
Linear regression equations based on the I-ELISAs were derived.
Regression equations were as effective as endpoint titrations in detecting antibodies.
Analytical sensitivities of the indirect ELISAs were 1:2560, 1:1280 and 1:640 for IgG, IgM and IgA1, respectively.
The concordances between I-ELISAs and serum-neutralization were 95.2% for IgG and IgA1, and 75% for IgM.