Abstract
The virus neutralization (VN) test and two enzyme-linked immunosorbent assays (blocking and indirect ELISAs) were used to detect antibodies to pseudorabies virus on serum samples of 1,000 pigs from the central part of Thailand. The results of these tests were compared to those of VN test. Using the VN test as standard, the blocking and indirect ELISAs showed respectively 95.12% and 99.37% relative sensitivity and 92.0% and 93.5% relative specificity. The two ELISAs were considered both as practical alternatives to the VN test. However, the indirect ELISA was the more suitable test for the routine screening for antibodies to pseudorabies virus in Thailand.
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