Roughly 1,200 Canadians traveled to the U.S. and purchased Townsend Farms frozen berries at Costco, according to the Public Health Agency of Canada. The berries were not sold in Canada, but citizens of British Columbia and Alberta had traveled south and purchased the berries on shopping trips. Approximately 240,000 people in the U.S. bought the berries, of which Costco and Townsend Farms has recalled 330,000 3 lb. bags.

No one in Canada has been found ill and Canadians are at little risk of illness, the health agency said. Thus far, at least 87 people in the U.S. have fallen ill as part of the outbreak.