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Table 2 Number of infected lambs in the 3 groups

From: Vaccination delays maedi-visna lentivirus infection in a naturally-infected sheep flock

Age in months:

2-4

5

11

16

23

28

Group 1

      

Vaccinated

0

0

1

6

8

8 (47%)

Unvaccinated

0

0

2

9

14

15 (88%)

Group 2

      

Vaccinated

4

5

11

13

13

13

Unvaccinated

12

12

12

13

13

13

Group 3

      

Vaccinated

0

0

0

At 18 months 9 pairs alive.

Unvaccinated

0

0

0

In 4 pairs both lambs seronegative.

    

In 3 pairs both lambs infected.

    

In 2 pairs one lamb negative one vaccinee and one unvaccinated.