The organism can be found in the respiratory tract and tonsils of both infected and healthy pigs that act as carriers.

Affected piglets can develop septicaemia, multifocal infections, and respiratory signs, and may die.

Adult pigs may show signs relating to pneumonia, lethargy, anorexia, skin lesions similar to erysipelas, and sudden death.

Antibiotics such as ceftiofur, gentamicin, and trimethoprim/sulfadiazine are effective in treating the disease if diagnosis is rapid enough.

Biosecurity measures should be strictly followed in herds, including adequate quarantine time, testing, and disinfection protocols.