Actinobacillus pleuropneumoniae

**Definition:** A species of gram-negative, facultatively anaerobic coccobacillus-shaped bacteria that has been isolated from pneumonic lesions and blood. It produces pneumonia with accompanying fibrinous pleuritis in swine.

**Tree numbers:** - B03.440.450.009.580 - B03.660.250.550.050.580

**Synonyms:** - Haemophilus pleuropneumoniae - Hemophilus pleuropneumoniae