World Animal Health in 2004. Part 1. Reports on the animal health status and disease control methods. Page 87 (13).
In 2004, Bonamia ostreae was discovered for the first time at one location in British Columbia, in the European flat oyster, Ostrea edulis. Deaths of 3- ad 4-year-old oysters at this site were associated with a severe algal bloom, but the exact correlation between the deaths and B. ostreae is not clear. Production of the European oyster is less than 1% of the total oyster production in British Columbia. No other species of oyster were affected and no transfer of oysters occurs between the Pacific and Atlantic coasts of Canada.