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Table 3 Summary of ELISA results (S/P ratio) in piglets

From: Vaccination of 1-day-old pigs with a porcine reproductive and respiratory syndrome virus (PRRSV) modified live attenuated virus vaccine is able to overcome maternal immunity

Treatment Number

Day of Study

Geometric Mean/LSMa

SE

Range

% of seropositive

T01

Day 0

1.662

0.437

0.609 to 2.641

100.0

T02

Day 0

1.836

0.358

0.967 to 2.632

100.0

T01

Day 67

0.279

0.015

0.021 to 0.747

38.9

T02

Day 67

1.803

0.101

1.151 to 2.310

100.0

T01

Day 77

1.517

0.111

0.543 to 2.070

100.0

T02

Day 77

1.794

0.096

1.187 to 2.343

100.0

  1. aDay 0 results are expressed with the Geometric Mean and Days 67 and 73 with the Back transformed – Least Square Mean (LSM); SE: standard error; ELISA positive: S/P ratio ≥ 0.4