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Table 2 Serological results vaccinated vs. non-vaccinated (Flock B and E). Comparison of cELISA positive (above cutoff) vaccinated and naturally exposed sheep with frequency, respective proportion (%), median titers and titer range.

From: Ovine Enzootic Abortion (OEA): a comparison of antibody responses in vaccinated and naturally-infected swiss sheep over a two year period

Flock (n) Parameter Spring 2005 Autumn 2005 Spring 2006 Autum 2006
B1 No. positive 6 3 2 2
14 sheep Prop. Pos. (%) 43 22 14 43
  Median titer 62.9 61.3 58.7 64.5
  Titer range 61.3 – 64.2 55.1 – 66.3 56.4 – 61.0 55.3 – 77.5
B2 No. positive 2 1 0 2
12 sheep Prop. Pos. (%) 17 8 0 17
  Median titer 71.1 68.1 - 62.2
  Titer range 69.4 – 72.8 - - 55.9 – 68.5
E1 No. positive 1 0 0 1
13 sheep Prop. Pos. (%) 8 0 0 8
  Median titer 61.4 - - 73.2
  Titer range - - - -
E2 No. positive 25 24 19 23
50 sheep Prop. Pos. (%) 50 48 38 46
  Median titer 76.3 81.2 80.4 82.2
  Titer range 57.4 – 94.7 56.5 – 96.3 55.2 – 97.6 56.0 – 98.7
  1. 1vaccinated group
  2. 2non-vaccinated group