Epi Curve

Multistate Outbreak of Shiga toxin-producing Escherichia coli O157:H7 Infections Linked to Ground Beef (Final Update)

Posted June 20, 2014 3:30 PM ET

This outbreak appears to be over. However, E. coli is still an important cause of human illness in the United States. More information about E. coli, and steps people can take to reduce their risk of infection, can be found on the CDC E. coli Web Page.

Final Epi Curve

The outbreak can be visually described with a chart showing the number of people who became ill each day. Please see the E. coli Outbreak Investigations: Timeline for Reporting Cases for more details.

Persons infected with the outbreak strains of E. coli O157:H7, by date of illness onset*

Final Epi Curve June 20, 2014: Persons infected with the outbreak strains of E. coli O157:H7, by date of illness onset

*n=12 for whom information was reported as of June 16, 2014.

Previous Epi Curve

May 19, 2014

Persons infected with the outbreak strains of E. coli O157:H7, by date of illness onset*

Epi Curve: May 19, 2014 Persons infected with the outbreak strains of E. coli O157:H7, by date of illness onset

*n=11 for whom information was reported as of May 16, 2014.

Illnesses that began after May 1, 2014 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.