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Table 1 Gross lung lesion scores 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

 

Gross lung lesion score (%)

Study

Group

n

Mean

95% CI

Median (IQR)

p-value*

20-week

1

22

0.156

0.00–0.16

0.000 (0.160)

0.2989

2

20

0.261

0.00–0.16

0.060 (0.185)

24-week

1

20

0.084

0.00–0.10

0.000 (0.130)

< 0.0001

2

19

3.378

0.61–4.74

2.050 (4.59)

26-week

1

21

1.099

0.05–0.55

0.060 (0.400)

< 0.0001

2

19

15.842

2.69–22.65

13.80 (20.85)

  1. CI distribution free confidence interval of the median, IQR interquartile range, MLV modified live virus, n number of pigs included in analysis, PRRS porcine reproductive and respiratory syndrome
  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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