METHOD OF PREPARING AN IMMUNOGEN OF PASTEURELLA MULTOCIDA

摘要

The invention relates to a method of preparing an immunogen by cultivating a Pasteurella multocida strain for at most 12 to 24 hours in a liquid medium, removing the bacteria from the culture medium, filtering the culture filtrate, and rapidly freezing or freeze-drying this filtrate. The invention also relates to a method of preparing a vaccin against Pasteurella multocida infections, and to the vaccin per se.