Epi Curves

Multistate Outbreak of Salmonella Heidelberg Infections Linked to Chicken (Final Update)

Posted July 10, 2013 05:00 PM ET

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

This outbreak can be visually described with a chart showing the number of persons who became ill each day. This chart is called an epi curve. Please see the Timeline for Reporting of Salmonella Cases for more details on the reporting process.

Persons infected with the outbreak strain of Salmonella Heidelberg, by week of clinical specimen collection*

*n=134 for whom information was reported as of May 6, 2013.

Previous Epi Curves

March 1, 2013

Persons infected with the outbreak strain of Salmonella Heidelberg, by week of clinical specimen collection*

*n=128 for whom information was reported as of February 28, 2013. Clinical specimens collected after February 4, 2013 might not yet be reported yet due to the time it takes between when a person becomes ill and when the illness is reported.

February 14, 2013

Persons infected with the outbreak strain of Salmonella Heidelberg, by week of clinical specimen collection*

*n=124 for whom information was reported as of February 13, 2013. Clinical specimens collected after January 20, 2013 might not yet 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