According to the CDC, he number of ill people reported from each state is as follows: Connecticut (1), Indiana (1), Massachusetts (1), Michigan (4), Missouri (2), New Jersey (1), New York (6), Ohio (2), and Pennsylvania (1). All 19 (100%) ill people were hospitalized, including one person from Michigan who died as a result of listeriosis. One of the illnesses reported was in a pregnant woman.

According to the Public Health Agency of Canada, ill people in Canada were infected with the same outbreak strain of Listeria.  There were 14 cases of Listeria in five provinces related to this outbreak: Ontario (9), Quebec (2), New Brunswick (1), Prince Edward Island (1), and Newfoundland and Labrador (1).  All cases have been hospitalized, and three people have died, however it has not been determined if Listeria contributed to the cause of these deaths.

Epidemiologic and laboratory evidence indicated that packaged salads produced at the Dole processing facility in Springfield, Ohio and sold under various brand names were the likely source of this outbreak.