2019 E. coli Outbreak Linked to Ground Bison Produced by Northfork Bison Distributions, Inc. – Epi Curve
Final Update
Posted September 13, 2019 at 4:00 PM ET
This outbreak appears to be over. Shiga toxin-producing Escherichia coli (STEC) is an important cause of illness in the United States. Find more information about steps you can take to reduce your risk of infection on the E. coli and Food Safety web page.
People infected with the outbreak strain of E. coli O103 and E. coli O121, by date of illness onset*
*n=33 for whom illness onset information was reported as of September 13, 2019. Some illness onset dates have been estimated from other reported information.
Previous Timelines
People infected with the outbreak strain of E. coli O103 and E. coli O121, by date of illness onset*
*n=21 for whom illness onset information was reported as of July 12, 2019. Some illness onset dates have been estimated from other reported information.
Illnesses that started after June 22, 2019 might not yet be reported due to the time it takes between when a person becomes ill and when the illness is reported. This takes an average of 2 to 4 weeks.
