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Eastern Equine Encephalitis Update

Information about a new EEE case confirmed in ON can be found here: Thank you OMAFRA for providing the case information.

Additional Information

For location of EEE in Ontario and Canada please go to:

CAHSS Equine Disease Dashboard

For public reports on EEE and other immediately notifiable diseases in Ontario please go to :

Outbreaks | Equine Disease Communication Center (

EEE has been reported in horses in Ontario since 1938. Historical equine neurological cases are posted on the OMAFRA website at:

Ontario’s local public health units are conducting mosquito surveillance for WNV and will report EEEV if found. As of July 22, 2023, no mosquito pools have tested positive for EEEV.

West Nile Virus Surveillance | Public Health Ontario


Bonjour aux membres du réseau équin du CAHSS,

Des informations sur un nouveau cas d'EEE confirmé en Ontario sont disponibles à l'adresse suivante : Merci au MAAARO d'avoir fourni ces informations.

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