Specificities of tests for detection of M. avium subsp. paratuberculosis-infected cattle in seven uninfected herds

TestNo. of cows test negative/total no. tested% Specificitya95% CI
Fecal PCR346/34799.7 (a)99.1-100
Serum ELISA A342/35995.3 (b)84.0-100.0
Serum ELISA B358/35999.7 (a)98.5-100.0
Milk ELISA359/36099.7 (a)98.5-100.0
  • a Different letters in parentheses indicate differences in specificity (P < 0.05). The source of ELISA specificity estimates was reference 7.