TABLE 1. Correlation between detection of V-Z viral antibody by neutralization and by EIA and IAHAa

Antibody No. of samples with V-Z virus-neutralizing antibody

Correlation (%)
Positiveb Negative

EIA
    Positive 50 4 94
    Negative 3 64
IAHA
    Positivec 37 0 87
    Negative 16 68

a Sera from individuals without evidence of a current V-Z virus infection.

b Titer of >1:4.

c Titer of >1:8.