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Table 2 Early detection of PRRSV by PCR as a function of specimen and day post inoculationa

From: Guidelines for oral fluid-based surveillance of viral pathogens in swine

Specimen Positivity (%) by day post inoculation
1 2 3 4 5 6 7
Serum 36.5 79.1 89.5 93.8 95.2 97.4 99.9
Blood swab 30.3 73.3 79.4 86.7 87.9 99.9 99.9
Oral fluid 3.6 59.0 89.4 97.6 99.9 99.9 99.9
  1. a Probability calculated using a binomial logistic regression model with estimates obtained using the least square methods. Reprinted from Pepin et al. (2015) Transboundary and Emerging Diseases 62, 295–304 (copyright 2013) with permission from John Wiley and Sons (4816070894659)