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Table 1 Two-by-two contingency table comparing results of ELISA for detection of PRRSV antibodies in serum and oral fluid collected via cotton gauze swabs and GenoTubes

From: Evaluation of the specificity of a commercial ELISA for detection of antibodies against porcine respiratory and reproductive syndrome virus in individual oral fluid of pigs collected in two different ways

IDEXX PRRS OF - oral fluid IDEXX PRRS X3 Ab - Serum
Negative Positive
Cotton gauze swabs Measure 1 Negative 304 0
Positive 7 39
Measure 2 Negative 302 -
Positive 9 -
  Total 311 39
GenoTubes Measure 1 Negative 303 0
Positive 9 67
Measure 2 Negative 304 -
Positive 8 -
  Total 312 67