**4.1 Hemorrhagic septicemia**

The disease results from certain serotypes of *Pasteurella multocida*, a gramnegative coccobacillus, which is often used as a nasopharyngeal animal. The Asian cultivar B:2 and the African serotype E:2 (Carter and Heddleston classification), corresponding to the classification of 6:B and 6:E (Namioka-Carter), are the two

main culprits. A:1 and A:3 have been associated with a condition similar to HS in cattle and buffaloes in India with pneumonia in the first place leading to death. The letter refers to the antigen of the wallet and indicates the number of physical antigens [1, 3].
