Changes

====Prognosis====

====Prognosis====

Comatose animals rarely survive.  Survivors exhibit functional improvement over weeks to months, but complete recovery from neurological deficits is rare.  Residual ataxia, depression and abnormal behaviour is often seen with EEE, less commonly with WEE.  The mortality rates for neurological equine viral encephalitis are reportedly:

Comatose animals rarely survive.  Survivors exhibit functional improvement over weeks to months, but complete recovery from neurological deficits is rare.  Residual ataxia, depression and abnormal behaviour is often seen with EEE, but less so with WEE.  The mortality rates for neurological equine viral encephalitis are reportedly:

*EEE 75-100%

*EEE 75-100%

*WEE 20-50%

*WEE 20-50%

*VEE 40-80%

*VEE 40-80%

It is generally assumed that infection does not provide protective immunity, however, protection for up to 2 years has been noted.

It is generally assumed that infection does not provide protective immunity, however, protection for up to 2 years has been noted.

====Control====

====Control====

=====Vaccination=====

=====Vaccination=====