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Epi Curves

Multistate Outbreak of Shiga toxin-producing Escherichia coli O121 Infections Linked to Farm Rich Brand Frozen Food Products (Final Update)

Posted May 30, 2013 01:00 PM ET

This particular 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 strain of E. coli O121, by date of illness onset*

Final Epi Curve: Persons infected with the outbreak strain of E. coli O121, by date of illness onset

*n=35 for whom information was reported as of May 20, 2013.

Previous Epi Curves

May 10, 2013

Persons infected with the outbreak strain of E. coli O121, by date of illness onset*

May 10, 2013 Epi Curve: Persons infected with the outbreak strain of E. coli O121, by date of illness onset

*n=35 for whom information was reported as of May 10, 2013. Illnesses that occurred after April 10, 2013 might not be reported yet due to the time it takes between when a person becomes ill and when the illness is reported.

April 26, 2013

Persons infected with the outbreak strain of E. coli O121, by date of illness onset*

April 26, 2013 Epi Curve: Persons infected with the outbreak strain of E. coli O121, by date of illness onset

*n=32 for whom information was reported as of April 23, 2013. 

Illnesses that occurred after March 30, 2013 might not be reported yet due to the time it takes between when a person becomes ill and when the illness is reported.

April 5, 2013

Persons infected with the outbreak strain of E. coli O121, by date of illness onset*

April 5, 2013 Epi Curve: Persons infected with the outbreak strain of E. coli O121, by date of illness onset

*n=27 for whom information was reported as of April 5,  2013. Illnesses that occurred after March 10, 2013 might not be reported yet due to the time it takes between when a person becomes ill and when the illness is reported.

March 29, 2013

Persons infected with the outbreak strain of E. coli O121, by date of illness onset*

March 29, 2013 Epi Curve: Persons infected with the outbreak strain of E. coli O121, by date of illness onset

*n=24 for whom information was reported as of March 28, 2013. Some illness onset dates have been estimated from other reported information. Illnesses that occurred after March 1, 2013 might not be reported yet due to the time it takes between when a person becomes ill and when the illness is reported.

Read the full Outbreak Investigation

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