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Table 2 Isolation of A. pleuropneumoniae from central and peripheral organ tissues and corresponding severity of disease during acute infection

From: Multi-organ spreading of Actinobacillus pleuropneumoniae serovar 7 in weaned pigs during the first week after experimental infection

  Sample Samples with positive isolation results (%) Degree of re-isolation (number of animals) Number of animals with isolation of A. pleuropneumoniae in the respective organs
Degree of clinical disease Degree of lung lesions Degree of isolation from the lungs
Low-grade Moderate High-grade Mild Moderate Severe Mild Moderate Severe Low-grade Moderate High-grade
  Blood; blood culture (n = 26) 50.0 (n = 13) 4 3 6 2 2 9 0 2 11
  Blood; direct plating (n = 23) 43.5% (n = 10) 2 5 3 3 3 4 2 2 6 0 2 8
Central organ samples Liver (n = 47) 61.7 (n = 29) 15 8 6 14 3 12 5 10 14 1 8 20
Spleen (n = 47) 51.1 (n = 24) 14 5 5 9 3 12 2 8 14 1 6 17
Kidney (n = 47) 55.3 (n = 26) 13 8 5 12 3 11 4 10 12 0 7 19
Peripheral organ samples Tarsal joints (n = 47) 14.9 (n = 7) 7 0 0 2 1 4 0 3 4 0 2 5
Carpal joints (n = 47) 12.8 (n = 6) 6 0 0 1 1 4 0 2 4 0 1 5
Meninges (n = 47) 27.7 (13) 10 3 0 4 1 8 2 2 9 0 4 9