This vaccine is a formalin-killed suspension of Pasturella multocida and Clostridium chauvoei cultures adjuvanted with Aluminium hydroxide gel. VACCINATION SCHEDULE : The cattle should be vaccinated at least 15-20 days before the onset of seasonal outbreak. It requires about 14 days for the animal to develop full immunity. Immunity usually lasts for 10-12 months. Booster vaccination is required every year just before the seasonal outbreak. ADMINISTRATION : Subcutaneously in lower neck region. PRESENTATION : 25 dose vial.