A NSW Government website

Equine encephalomyelitis

Emergency Animal Disease information


Report Equine Encephalomyelitis

If you suspect an emergency animal disease you must report it immediately to the Emergency Animal Disease Hotline on 1800 675 888 or an Authorised Officer on 1300 795 299.



Equine Encephalomyelitis (Eastern, Western and Venezuelan)

Equine Encephalomyelitis (Eastern, Western and Venezuelan)

Eastern, Western and Venezuelan equine encephalomyelitis (EEE, WEE and VEE) are serious viral diseases caused by mosquito-borne zoonotic arboviruses. These viruses are endemic in North, Central and South America but do not occur in Australia.

All three viruses belong to the same family and can produce similar clinical signs in horses. In severe cases, these may include:

Neurological signs:

  • Hyperexcitability
  • Blindness
  • Ataxia (loss of coordination)
  • Severe mental depression
  • Recumbency (unable to stand)
  • Convulsions
  • Fever (pyrexia)
  • Loss of appetite (anorexia)
  • Severe depression


Reporting animal biosecurity emergencies

Some animal pests and diseases, or residues in animal products or stock feed can have serious consequences for trade, production or human health.  By remaining vigilant and acting quickly if you suspect a significant animal pest, disease, or residue you may be able to prevent these consequences. Don’t delay! Contact Local Land Services or ring the 24 hour hotline:

Emergency Animal Disease Hotline (24 hours) on 1800 675 888.



Contact us

If you have a general query or concern about animal diseases, please email staff in Animal Biosecurity at animal.biosecurity@dpird.nsw.gov.au