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Table 1 Summary of diagnostic results of 20 case herds exhibiting a respiratory outbreak and of eight control herds with no respiratory symptoms in finishing pigs

From: Etiology of acute respiratory disease in fattening pigs in Finland

Herd Herd status Herd classificationa Bacteriology APP (serology)b SIV (serology)b SIV (detection)c PCV2 (PCR)d
1 case CL-APP APP, Actinomyces sp. Yes Yes No 3 (20%)
2 case CL-ASC No specific bacteria No No No 0
3 case CL-ASC APP Yes No No 0
4 case CL-APP APP Yes No No 0
5 case CL-APP APP Yes No No 0
6 case CL-APP APP Yes No No 0
7 case CL-MISC gram-, CAMP-, NAD dependent rod-bacterium; S. aureus Yes Yes No 0
8 case CL-APP APP Yes No No 2 (13%)
9 case CL-APP APP Yes No No 0
10 case CL-APP APP Yes No No 0
11 case CL-APP APP Yes No No 13 (67%)
12 case CL-ASC No specific bacteria Yes No No 4 (27%)
13 case CL-APP APP, Str. dysgalactiae subsp. equisimilis, E.coli Yes No No 0
14 case CL-MISC Str. suis, Streptococcus sp. Yes No No 9 (47%)
15 case CL-APP APP, P. multocida Yes No No 0
16 case CL-APP APP Yes Yes No 0
17 case CL-APP APP Yes No No 0
18 case CL-APP APP Yes No No 2 (13%)
19 case CL-APP APP Yes No No 1 (7%)
20 case CL-MISC APP, P. multocida Yes No No 0
21 control NA NA No No NA 1 (7%)
22 control NA NA Yes No NA 0
23 control NA NA Yes Yes NA 0
24 control NA NA No No NA 0
25 control NA NA Yes No NA 0
26 control NA NA Yes No NA 1 (7%)
27 control NA NA Yes No NA 0
28 control NA NA Yes Yes NA 0
  1. Abbreviations: CL-APP acute APP infection, CL-ASC acute Ascaris suum infection, CL-MISC acute infection of miscellaneous etiology, APP Actinobacillus pleuropneumoniaen, A. suum Ascaris suum, S. aureus Staphylococcus aureus, P. multocida Pasteurella multocida, E.coli Escherichia coli, Actinomyces sp. Actinomyces species, Haemophilus sp. Haemophilus species, Str. dysgalactiae subsp. equisimilis Streptococcus dysgalactiae subspecies equisimilis, Str. suis Streptococcus suis, SIV swine influenza virus, PCV2 porcine circovirus 2, NA not available
  2. aMain necropsy diagnosis based on pathological and bacteriological results from three necropsied pigs
  3. bSeroconversion in ≥1 out of 15 pigs sampled
  4. cSIV detection with PCR from ≥1 nasal sample out of 20 pigs or from ≥1 lung sample of three necropsied pigs
  5. dNumber and percentage (in parentheses) of PCV2 positive samples per herd in PCR analysis