Bovine Ephemeral Fever (B.E.F) or commonly known as 3 day sickness is a viral disease spread by mosquitoes.
Cases commonly present in the Autumn-Summer part of the year. The level of infection however varies from year to year & often affects cattle over 6 months of age.
Recovered animals generally have lifelong immunity to the disease.
Signs of disease:
- Fever (over 40*C)
- Lame/stiff or reluctant to move
Most animals recover within 3 days but animals that are heavy or go down can take a lot longer. Some animals can die from prolonged fever or complications from being down.
Affected bulls are usually infertile 3-6 months post disease & some may never recover enough to serve.
They will usually recover themselves without any treatment. Water & shade is a MUST. Prescription anti-inflammatory injections are available to reduce the fever & stiffness in some cases.
A vaccine is available from Veterinarians & gives protection against B.E.F. 2 doses of the vaccine are required initially, one month apart & then repeated annually. Vaccination is best done in Spring BEFORE the disease period starts!