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Table 3 Summation of positive sera from the unvaccinated flocks

From: High frequency of chlamydial co-infections in clinically healthy sheep flocks

   # positive sera vs. # sera tested # of animals
flock # abortion rate (%) 1st serum d1/2 p.p. 2nd serum d21 p.p. positive/ # total sero-conversion/ # total
1 0 0 4/29 4/29 -
2 0 5/29 2/25 5/29 0/25
3 < 1 6/29 5/27 6/29 0/29
4 0 11/29 10/29 11/29 0/29
5 3 11/29 4/6 13/29 2/6
6 0 1/29 2/27 2/29 1/27
7 0 6/29 6/25 9/29 3/25
8 < 1 6/30 5/30 6/30 0/30
9 0 7/29 12/29 14/29 6/29
10 0 1/29 1/29 1/29 0/29
11 < 1 3/29 5/29 5/29 2/29
12 0 0/30 0/29 0/30 0/29
14 < 1 1/29 2/28 2/29 1/28
15 < 1 9/29 9/28 9/29 0/28
16 < 1 8/29 8/29 9/29 1/29
17 < 1 15/29 16/29 16/29 1/29
18 < 1 1/29 1/29 1/29 0/29
20 < 1 8/29 6/25 8/29 0/29
21 < 1 3/29 2/29 3/29 0/29
22 < 1 8/29 9/29 10/29 1/29
23 < 1 7/29 7/29 8/29 1/29
24 0 2/29 1/19 2/29 0/19
25 < 1 5/29 4/25 5/29 0/25
26 1 6/29 6/29 6/29 0/29
27 < 1 4/29 5/29 6/29 2/29
29 0 3/29 2/27 3/29 0/27
32 0 1/29 2/29 2/29 1/29
33 < 1 2/29 2/28 2/29 0/28
34 < 1 3/29 6/29 7/29 4/29
35 < 1 5/29 10/29 10/29 5/29
37 < 1 1/29 2/26 2/29 1/26
40 < 1 0/29 - 0/29 -