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Table 3 Results of virus isolation from serum samples of vaccinated pigs in MARC-145 and PAM cultures.

From: Safety of Porcine Reproductive and Respiratory Syndrome Modified Live Virus (MLV) vaccine strains in a young pig infection model

Days post-vaccination

Virus isolation on Marc-145

Virus isolation on PAM

Group

Group

A

B

C

D

A

B

C

D

0

0/15 (0) a

0/15 (0)

0/15 (0)

0/15 (0)

0/15 (0)

0/15 (0)

0/15 (0)

0/15 (0)

3

12/15 (80)

14/15 (93.3)

0/15 (0)

0/15 (0)

0/15 (0)

0/15 (0)

0/15 (0)

0/15 (0)

6

15/15 (100)

14/15 (93.3)

14/15 (93.3)

11/15 (73.3)

0/15 (0)

0/15 (0)

0/15 (0)

0/15 (0)

7

5/5 (100)

5/5 (100)

5/5 (100)

3/5 (60)

0/5 (0)

0/5 (0)

0/5 (0)

0/5 (0)

9

10/10 (100)

8/10 (80)

6/10 (60)

8/10 (80)

0/10 (0)

0/10 (0)

0/10 (0)

0/10 (0)

12

10/10 (100)

8/10 (80)

9/10 (90)

8/10 (80)

1/10 (10)

3/10 (30)

0/10 (0)

0/10 (0)

14

5/5 (100)

4/5 (80)

3/5 (60)

4/5 (80)

1/5 (20)

1/5 (20)

0/5 (0)

0/5 (0)

15

5/5 (100)

5/5 (100)

3/5 (60)

3/5 (60)

0/5 (0)

0/5 (0)

0/5 (0)

0/5 (0)

18

5/5 (100)

4/5 (80)

4/5 (80)

4/5 (80)

0/5 (0)

1/5 (20)

0/5 (0)

0/5 (0)

21

5/5 (100)

4/5 (80)

4/5 (80)

2/5 (40)

1/5 (20)

0/5 (0)

0/5 (0)

0/5 (0)

  1. a Number of positive samples/Number samples tested (Percentage of positive samples).