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Investigation of a Multistate Outbreak of Human Salmonella I 4,[5],12:i:- Infections Linked to Alfalfa Sprouts


Infections with the outbreak strain of Salmonella I 4,[5],12:i:-, by known or estimated illness onset* (n=111 for whom information was reported as of 1/4/2011)

Infected with the Outbreak Strain of Salmonella I4,[5],12:i:-, by known or estimated illness onset. November 2010 - present.

Onset data not currently available for all persons with reported illness

The outbreak can be visually described with a chart showing the number of people who became ill each day. This chart is called an epidemic curve or epi curve. Illnesses that occurred after December 13, 2010, might not be reported yet 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. For more information, please see Salmonella Outbreak Investigations: Timeline for Reporting Cases.

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