Timeline of Reported Cases

Final Update

Posted June 9, 2020 at 11:00 AM ET

This outbreak appears to be over. However, Listeria remains an important cause of serious, life-threatening illness in the United States. For steps that you can take to reduce your risk of infection, visit CDC’s Preventing Listeriosis webpage.

People infected with the outbreak strain of Listeria monocytogenes, by month when Listeria was identified in ill people’s samples*

Epi curve of people infected with the outbreak strain of Listeria, by month of illness onset, as of June 9, 2020.

*n=36 for whom information was reported as of June 9, 2020.

Previous Timelines