Porcine pneumonia, also known as pasteurellosis and laryngeal lock disease, is an acute infectious disease in pigs. The main features are septicemia, acute inflammatory swelling of the throat and its surrounding tissues or pulmonary and pleural inflammation treated with fibrin. The disease is widely distributed and has a low incidence rate, and is often secondary to other infectious diseases. Its pathogen is Pasteurella multocida, which is gram-negative, with dense staining at both ends and can form capsules. There are many serotypes Pasteurella multocida was weak in resistance and died within 2-3 days after drying. It can live for 65,438+00 days in blood and feces, 65,438+0-3 months in rotting corpses, and die immediately under sunlight and high temperature. 65,438+0% caustic soda and 2% Lysol can kill it quickly.

Epidemiology: according to the changes of autopsy, combined with clinical symptoms and epidemic situation, make a diagnosis.