TABLE 1.

Summary of BDV serological assays

Assay	Antigen	Relative specificitya	Relative sensitivitya
IFA	Fixed, BDV-infected cells	Poor	Good
IB	Natural or recombinant BDV proteins	Good	Moderate
ELISA/ECLIAb	Natural or recombinant proteins	Moderate to good	Moderate to low

^aFor human sera. 

^bECLIA, electrochemiluminescence immunoassay.