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Table 1 Distribution of A. pleuropneumoniae colonization status by bacteriological culture and corresponding clinical, pathomorphological and bacteriological examination results

From: Evaluation of the predictive value of tonsil examination by bacteriological culture for detecting positive lung colonization status of nursery pigs exposed to Actinobacillus pleuropneumoniae by experimental aerosol infection

  Detected Actinobacillus pleuropneumoniae status by bacteriological culture (n = 163)
  Tonsils: negative
Lungs: negative
Tonsils: negative
Lungs: positive
Tonsils: positive
Lungs: negative
Tonsils: positive
Lungs: positive
Total number of animals 12 22 7 122
Degree of clinical diseasea (number of animals)
- No disease 8 0 4 4
- Mild disease 4 3 3 13
- Moderate disease 0 13 0 76
- Severe Disease 0 6 0 29
Euthanized due to Rescue criteria (number of animals) 0 6 0 29
Lung lesions scorea (LLS; number of animals)
- No lesions 5 0 4 4
- LLS: 0.1–12.5 6 13 3 49
- LLS: 12.5–25 1 7 0 41
- LLS: > 25 0 2 0 28
Degree of isolation from lung tissuea (number of animals)
- No isolation 12 0 7 0
- Low-grade 0 7 0 16
- moderate 0 7 0 51
- high-grade 0 8 0 55
Positive test results for different lung lobes (%)
- Cranial lobes 0 76,2 0 93,0
- Middle lobes 0 76,2 0 88,5
- Caudal lobes 0 83,3 0 93,2
- Lobus accessorius 0 85,7 0 91,8
  1. asignificant correlation between lung lesion score, overall isolation from lungs and overall isolation from tonsils