Changes

**Cyanosis

**Cyanosis

**Pregnant sows abort

**Pregnant sows abort

**Causes [[Bacterial infections#Actinobacillus pleuropneumoniae|pneumonia]] in pigs

**Causes [[Respiratory Bacterial Infections - Pathology#Actinobacillus pleuropneumoniae|pneumonia]] in pigs

**Carrier herds have some immunity, protecting from acute disease, where lesions are often subclinical, and deaths sporadic

**Carrier herds have some immunity, protecting from acute disease, where lesions are often subclinical, and deaths sporadic

**Lung scarring and pleural adhesions in many recovered animals

**Lung scarring and pleural adhesions in many recovered animals