Changes

===EEE and WEE===

===EEE and WEE===

Following an incubation period of 7-21days, an initial pyrexia and mild depression are short-lived and often missed.  The acute phase of the disease presents with mild to severe pyrexia, anorexia and stiffness, lasting up to 5 days.  During this time, the horse is viraemic and capable of amplifying the disease.  The fever may then fluctuate with neurological derangements appearing a few days post-infection.  These changes indicate disease progression, which occurs more frequently with EEE (the most virulent of the three serotypes).  Any of the following may be observed:

Following an incubation period of up to 21days, an initial pyrexia and mild depression are short-lived and often missed.  The acute phase of the disease presents with mild to severe pyrexia, anorexia and stiffness, lasting up to 5 days.  During this time, the horse is viraemic and capable of amplifying the disease.  The fever may then fluctuate with neurological derangements appearing a few days post-infection.  These changes indicate disease progression, which occurs more frequently with EEE (the most virulent of the three serotypes).  Any of the following may be observed:

*conscious proprioceptive deficits

*conscious proprioceptive deficits

*propulsive walking

*propulsive walking