They can cause pneumonia in their own right but are usually secondary opportunist invaders associated with primary EP or PRRS infections. Discharges from the nose.
Pigs show rapid breathing.
Pneumonia which is less severe but often complicated by heart sac inflammation and pleurisy. Discharges from the nose. Concurrent disease such as PRRS, Flu and EP predispose. This is carried out by post-mortem examination and isolation of the organism from the lungs.