Isolated microorganisms from pulmonary biopsy specimen cultures in mechanically ventilated piglets developing spontaneous pneumonia
| Microorganism | Isolates ≥104 CFU·g−1 | Isolates <104 CFU·g−1 |
| Pasteurella multocida | 40 | 12 |
| Klebsiella oxytoca | 2 | |
| Citrobacter freundii | 2 | |
| Moraxella catarrhalis | 1 | |
| Pseudomonas aeruginosa | 1 | |
| Streptococcus suis | 20 | 5 |
| Streptococcus bovis | 13 | 2 |
| Staphylococcus epidermidis | 3 | 2 |
| Staphylococcus aureus | 3 | 4 |
| Bacillus sp. | 1 |
CFU: colony-forming unit. Modified from 12 with permission from the publisher.