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Table 5 PRRSV-viral RNA load for lung tissues at necropsy

From: Long duration of immunity against a type 1 heterologous PRRS virus challenge in pigs immunised with a novel PRRS MLV vaccine: a randomised controlled study

 

PRRSV-viral RNA load in lung tissues at necropsy (mean log10 GE/mL)

Study

Group

n

Mean

95% CI

Median (IQR)

p-value*

20-week

1

22

4.26

3.70–5.18

4.20 (1.51)

< 0.0001

2

20

6.31

5.94–6.73

6.51 (0.86)

24-week

1

20

2.36

1.50–4.17

1.50 (3.42)

< 0.0001

2

19

5.33

4.85–5.97

5.34 (1.23)

26-week

1

21

3.36

1.50–5.21

3.69 (3.18)

< 0.0001

2

20

6.22

5.62–6.68

6.25 (1.26)

  1. CI distribution free confidence interval of the median, GE genome equivalent, IQR interquartile range, MLV modified live virus, n number of pigs included in analysis, PRRS porcine reproductive and respiratory syndrome, PRRSV PRRS virus
  2. Group 1 = PRRS 94881 MLV vaccinated; Group 2 = challenge controls
  3. *p-values were calculated using the Wilcoxon-Mann-Whitney test
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Porcine Health Management

ISSN: 2055-5660

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