Immediately Notifiable Diseases

These diseases are of significant importance to aquatic animal health and to the Canadian economy. Most of these diseases do not occur in Canada and are most likely to be detected by a laboratory. Laboratories are required to contact the CFIA regarding the suspicion or diagnosis of these diseases.

Facilities working with animal or zoonotic pathogens must comply with the Containment Standards for Facilities Handling Aquatic Animal Pathogens.



  • Epizootic ulcerative syndrome (Aphanomyces invadans)
  • Gyrodactylosis (Gyrodactylus salaris)
  • Oncorhynchus masou virus disease (Oncorhynchus Masou Virus)
  • Red sea bream iridoviral disease (Red Sea Bream Iridovirus)


  • Abalone viral mortality (Abalone Herpes-like Virus)
  • Disease caused by Bonamia exitiosa
  • Disease caused by Bonamia roughleyi
  • Brown ring disease (Vibrio tapetis)
  • Disease caused by Marteilia sydneyi
  • Withering syndrome of abalone (Xenohaliotis californiensis)

Susceptible species