Changes

Although VEE does not cause as high a mortality as WEE/EEE, the clinical signs are similar. However, a second generalised infection may be caused by the virus causing fever, depression, colic and diarrhoea.

Although VEE does not cause as high a mortality as WEE/EEE, the clinical signs are similar. However, a second generalised infection may be caused by the virus causing fever, depression, colic and diarrhoea.

Worse in unvaccinated animals.  Acute signs of EEE and WEE are nonspecific, last up to 5 days and include:

Worse in unvaccinated animals.   

 

=====EEE and WEE=====

Acute signs are nonspecific and last up to 5 days:

*mild to severe pyrexia

*mild to severe pyrexia

*anorexia

*anorexia

*paralysis of pharynx, larynx and tongue

*paralysis of pharynx, larynx and tongue

*recumbency for 1-7 days followed by death

*recumbency for 1-7 days followed by death

VEE may have similar or different clinical presentations to WEE and EEE, which may relate to a persistently hightitre viraemia with VEE and differences in strain pathogenicity:

 

*pyrexia peaks early and remains high throuhgout the disease course

=====VEE=====

*mild fever and leukopenia associated experimentally with endemic strains

Clinical signs may resemble those of WEE and EEE or may vary:

*severe pyrexia and leukopenia associated with epidemic strains

*pyrexia peaks early and persists throughout the disease course

*mild pyrexia and leukopenia with endemic strains  

*severe pyrexia and leukopenia with epidemic strains

*neurological signs around 4 days post-infection

*neurological signs around 4 days post-infection

*other associated signs: abortion, oral ulceration, pulmonary haemorrhage, epistaxis

 

*other signs: abortion, oral ulceration, pulmonary haemorrhage, epistaxis

 

====Diagnosis====

====Diagnosis====