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Epi Curves

Multistate Outbreak of Human Salmonella Infantis Infections Linked to Dry Dog Food (Final Update)

Posted July 18, 2012 6:00 PM ET

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 and the CDC Vital Signs 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.

Epi Curve

Persons infected with the outbreak strain of Salmonella Infantis, by date of illness onset*

Final Epi Curve: Persons infected with the outbreak strain of Salmonella Infantis, by date of illness onset

*n=46 for whom information was reported as of July 11, 2012

Previous Epi Curves

June 11, 2012

Persons infected with the outbreak strain of Salmonella Infantis, by date of illness onset*

Epi Curve June 11, 2012: Persons infected with the outbreak strain of Salmonella Infantis, by date of illness onset

*n=19 for whom information was reported as of June 11, 2012. Illnesses that occurred after May 11, 2012 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 3 weeks.

May 10, 2012

Persons infected with the outbreak strain of Salmonella Infantis, by date of illness onset*

Epi Curve May 10, 2012: Persons infected with the outbreak strain of Salmonella Infantis, by date of illness onset

*n=15 for whom information was reported as of May 10, 2012. Illnesses that occurred after April 13, 2012 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 3 weeks.

May 2, 2012

Persons infected with the outbreak strain of Salmonella Infantis, by date of illness onset*

Epi Curve May 2, 2012: Persons infected with the outbreak strain of Salmonella Infantis, by date of illness onset

*n=14 for whom information was reported as of May 2, 2012. Illnesses that occurred after April 1, 2012 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 3 weeks.

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