EVOLUTION

ANIMAL BREEDS

DISEASES

MEDICATIONS

FOOD/FEED

BEHAVIOUR

EXOTIC ANIMALS

SPECIAL SECTION

Viral Disease - Bovine Ephemeral Fever

Etiology

Arthropod-borne Rhabdo virus of the genus Ephemerovirus

Epidemiology

Enzootic in tropical areas. Transmitted by insect vectors. Episodic epizootics in summer in incursive areas probably initiated by wind-borne transmission of insect vector. High morbidity but low case fatality

Clinical findings

Disease of cattle with fever, respiratory distress, muscular shivering, stiffness, lameness and enlargement of the peripheral lymph nodes Generally spontaneous recovery in three

days and low case-fatality rate

Clinical pathology

Leukocytosis, hyper fibrinogenemia, hypocalcemia, elevated creatine kinase. Blocking ELISA for serology

Necropsy findings

Sero fibrinous polyserositis

Diagnostic confirmation

Demonstration of specific bovine ephemeral fever (BEF) viral antigen by immunofluorescence or by isolation in mice

Treatment

Non-steroidal anti-inflammatory drugs cause remission of clinical signs

Control

Vaccination and supportive treatment.


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