The Public Health Agency of Canada is collaborating with provincial public health partners, the Canadian Food Inspection Agency and Health Canada to investigate an outbreak of Escherichia coli O157, commonly called E. coli. The outbreak involves three provinces and is linked to romaine lettuce. At this time, there are no product recalls associated with this outbreak. The outbreak investigation is ongoing, and this public health notice will be updated on a regular basis as the investigation evolves.

Currently, there are 21 cases of E. coli O157 illness under investigation in three provinces: Quebec (3), New Brunswick (5), and Newfoundland and Labrador (13). Individuals became sick in November 2017. Ten individuals have been hospitalized. No deaths have been reported. Individuals who became ill are between the ages of 5 and 72 years of age. The majority of cases (71%) are female.

Many individuals who became sick reported eating romaine lettuce before their illnesses occurred. The Canadian Food Inspection Agency is working with public health officials to determine the source of the romaine lettuce that ill individuals were exposed to.