So, where did the romaine lettuce come from?

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:H7. The outbreak involves five 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 30 cases of E. coli O157 illness under investigation in five provinces: Ontario, (6), Quebec (5), New Brunswick (5), Nova Scotia (1), and Newfoundland and Labrador (13). Individuals became sick in November and December 2017. Twelve individuals have been hospitalized. One individual has died. Individuals who became ill are between the ages of 4 and 80 years of age. The majority of cases (70%) are female.

So, where did the romaine lettuce come from?