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Epi Curves

Multistate Outbreak of Human Salmonella Typhimurium Infections Linked to Live Poultry in Backyard Flocks (Final Update)

Posted November 1, 2013 1:30 PM ET

This outbreak appears to be over. However, live poultry, including those kept in backyard flocks, are an important cause of human Salmonella infections in the United States. More information about Salmonella from live poultry and the steps people can take to reduce their risk of infection is available.


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

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

*n=348 for whom information was reported as of October 28, 2013

Previous Epi Curves

August 19, 2013


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

August 19, 2013 Epi Curve: Persons infected with the outbreak strain of Salmonella Typhimurium, by date of illness onset

*n=316 for whom information was reported as of August 15, 2013

Illnesses that occurred after July 22, 2013 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.

August 9, 2013


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

August 9, 2013 Epi Curve: Persons infected with the outbreak strain of Salmonella Typhimurium, by date of illness onset

*n=307 for whom information was reported as of August 6, 2013

Illnesses that occurred after July 13, 2013 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.

June 28, 2013


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

June 28, 2013 Epi Curve: Persons infected with the outbreak strain of Salmonella Typhimurium, by date of illness onset

*n=258 for whom information was reported as of June 28, 2013

Illnesses that occurred after June 4, 2013 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.

June 6, 2013


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

June 6, 2013 Epi Curve: Persons infected with the outbreak strain of Salmonella Typhimurium, by date of illness onset

*n=219 for whom information was reported as of June 4, 2013

Illnesses that occurred after May 12, 2013 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.

May 10, 2013


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

May 10, 2013 Epi Curve: Persons infected with the outbreak strain of Salmonella Typhimurium, by date of illness onset

*n=146 for whom information was reported as of May 7, 2013

Illnesses that occurred after April 14, 2013 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.

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