Bovine Hemorrhagic septicemia highly fatal form

Hemorrhagic septicemia

Definition: a severe and frequently fatal septicemicpasteurellosis of cattle caused by Pasteurella multocidatype B:2 or E:2.

Clinical features: 

the condition is characterized bysudden severe pyrexia, dyspnea, salivation, hot and painfuledematous skin 

swellings, and submucosal petechiation.

Treatment 

 


Antimicrobials are effective against HS if administered very early in the disease. However, because HS progresses rapidly, therapy is often unsuccessful. During outbreaks, any animal with a fever should be treated with IV antimicrobials as soon as possible to quickly obtain systemic bactericidal antimicrobial concentrations. Various sulfonamides, tetracyclines, penicillin, gentamicinkanamycin, ceftiofur, enrofloxacin, tilmicosin, and chloramphenicol have been used effectively to treat HS. However, plasmid- and chromosomal-mediated multidrug resistance seems to be increasing for some strains of P multocida, and resistance to tetracyclines and penicillin has been reported for serotype B:2.

Prevention

Prevention is by vaccinationtwice yearly, preferably with the oil-adjuvant or alumprecipitatedbacterin.

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