An evaluation of Irish cattle herds with inconclusive serological evidence of bovine brucellosis

摘要: Since 1998, there has been a steady decline in herd restrictions and de-populations Ireland due to bovine brucellosis. There is concern that the interpretation of laboratory results may become increasingly problematic, as brucellosis prevalence falls Ireland. Therefore, purpose current study was evaluate infection status Irish herds animals with inconclusive serological evidence During 12 months from September 1, 2004, observational epidemiological data were collected all where animal testing identified at least one complement fixation test (CFT) reading greater than zero and/or positive result indirect enzyme-linked immunosorbent assay (iELISA). Due nature study, we have robust estimates relative, but not absolute, performance CFT, iELISA brucellin skin (BST). Herds divided into three categories (Group A, B or C) on basis initial assessment. A total 639 enrolled observed for two years following enrolment. rising CFT titre, 111 International Units (IU) subsequent blood test, generally associated other also available. Knowledge proved useful distinguishing false-positive true-positive results. poor correlation between results, BST As this national policy modified include re-sampling readings 20 IU greater. This project led reduction number restricted, well restriction duration. It contributed listed contiguous tests, therefore potential contiguity false