Indiana, Massachusetts, Michigan, New Jersey, New York and Pennsylvania state impacted.

Since September 2015, CDC has been collaborating with public health officials in several states and the FDA to investigate a multistate outbreak of Listeria monocytogenes infections.

Twelve people infected with the outbreak strain of Listeria have been reported from six states since July 5, 2015. Twelve people were hospitalized, and one person from Michigan died as a result of listeriosis. One illness was reported in a pregnant woman.

Laboratory tests performed on clinical isolates from all 12 ill people showed that the isolates are highly related genetically.

Epidemiologic and laboratory evidence available to date indicate that packaged salads produced at the Dole processing facility in Springfield, Ohio and sold under various brand names are the likely source of this outbreak.The following brands have been recalled in the US and Canada:

Dole, Fresh Selections, Simple Truth, Marketside, The Little Salad Bar, and President’s Choice

The Ohio Department of Agriculture collected a Dole brand Field Greens packaged salad from a retail location and isolated Listeria. Laboratory tests showed that the Listeria isolate from the packaged salad was highly related genetically to isolates from ill people. This packaged salad was produced at the Springfield, Ohio Dole processing facility.

CDC recommends that consumers do not eat, restaurants do not serve, and retailers do not sell packaged salads produced at the Dole processing facility in Springfield, Ohio. These packaged salads were sold under various brand names. Brands of packaged salads include Dole, Fresh Selections, Simple Truth, Marketside, The Little Salad Bar, and President’s Choice.

The Public Health Agency of Canada is collaborating with federal and provincial public health partners to investigate an outbreak of Listeria monocytogenes infections in five provinces.

To date, the source of this outbreak has not been confirmed. However prepackaged leafy greens, salad blends, and salad kits are food items being investigated.

Epidemiological evidence has confirmed seven cases of Listeria monocytogenes across five provinces related to this outbreak: Ontario 3, Quebec 1, New Brunswick 1, Prince Edward Island 1 and Newfoundland and Labrador 1.

All cases have been hospitalized, and one person has died.