CDC, public health and regulatory officials in several states, and the U.S. Food and Drug Administration (FDA) are collecting different types of data to investigate a multistate outbreak of Listeria monocytogenes infections.
Epidemiologic, traceback, and laboratory data show that cheese made by Old Europe Cheese, Inc. may be contaminated with Listeria and may be making people sick.
Epidemiologic and Traceback Data
As of September 28, 2022, six people infected with the outbreak strain of Listeria have been reported from six states (see map). Sick people’s samples were collected from August 6, 2017, to August 5, 2022 (see timeline).
Sick people range in age from 56 to 83 years, with a median age of 78, and 67% are female. Five people have been hospitalized, and no deaths have been reported.
The true number of sick people in this outbreak is likely higher than the number reported, and the outbreak