Total Sick – 350
Hospitalized – 162
Kidney Failure – 31
Deaths – 7

In 2017 in Canada, a total, of 42 cases of E. coli O157 illness were reported in five eastern provinces: Ontario (8), Quebec (15), New Brunswick (5), Nova Scotia (1), Newfoundland and Labrador (13). Seventeen individuals were hospitalized. One individual died. Individuals who became ill were between the ages of 3 and 85 years of age. The majority of cases (74%) were female.

In 2017 in the United States, 25 people infected with the outbreak strain of STEC O157: H7 had been reported from 15 states. Ill people ranged in age from 1 to 95 years, with a median age of 26. Among ill people, 67% were female. Nine ill people were hospitalized, including two people who developed the hemolytic uremic syndrome. One death was reported from California.

In the Spring of 2018 in Canada, there were eight Canadian illnesses of E. coli O157 with a similar genetic fingerprint to illnesses reported in the U.S. investigation.

In the United States as of June 27, 2018, 210 people infected with the outbreak strain of E. coli O157: H7 were reported from 36 states. Ill people ranged in age from 1 to 88 years, with a median age of 28. Sixty-seven percent of ill people were female. Of 201 people with information available, 96 (48%) were hospitalized, including 27 people who developed the hemolytic uremic syndrome. Five deaths were reported from Arkansas, California, Minnesota (2), and New York.

In Canada, as of November 23, 2018, there had been 22 confirmed cases of E. coli illness investigated in Ontario (4), Quebec (17), and New Brunswick (1). Eight individuals were hospitalized, and one individual suffered from the hemolytic-uremic syndrome. Individuals who became ill were between 5 and 93 years of age. The cases are evenly distributed among male and female individuals.

As of today, forty-three people infected with the outbreak strain of Shiga toxin-producing E. coli O157:H7 have been reported from 12 states. Illnesses started on dates ranging from October 8, 2018 to October 31, 2018. Sixteen people have been hospitalized, including one person who developed hemolytic uremic syndrome, a type of kidney failure.

Epidemiologic and traceback evidence from the United States and Canada indicates that romaine lettuce harvested from the Central Coastal growing regions of northern and central California is a likely source of the outbreak.

Ill people in this outbreak were infected with E. coli bacteria with the same DNA fingerprint as the E. coli strain isolated from ill people in a 2017 outbreak linked to leafy greens in the United States and to romaine lettuce in Canada. The current outbreak is not related to a spring 2018 multistate outbreak of E. coli O157:H7 infections linked to romaine lettuce.

CDC is advising that consumers not eat any romaine lettuce harvested from the Central Coastal growing regions of northern and central California. No common grower, supplier, distributor, or brand of romaine lettuce has been identified.