Under some circumstances when the animals are weaker and more stressed than normal the bacteria multiply and disease suddenly appears. 5 HS is a dangerous disease which can pass easily from one animal to another. It does not attack people. A bacteria Pasteurella Multocida causes the disease. 8 Strong animals may carry the bacteria but show no signs .
Animals become dull and have high fever.
They refuse to eat and salivate more than normally. There is also discharge from the nose. Swellings develop typically and quickly, especially around the throat, the brisket, the dewlap and sometimes around the head. The tongue may swell also and protrude from the mouth. Finally, the animal has difficulty breathing because the swellings impair respiration and it may die from this obstruction of the respiratory tract.