Salmonella

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

Persons infected with the outbreak strain of Salmonella I4,[5],12:i:-, by state

Infected with the outbreak strain of Salmonella I4,[5],12:i:-, by state

From November 1 to December 21, 2010, a total of 89 individuals with a matching strain of Salmonella serotype I 4,[5],12:i:- have been reported from 15 states and the District of Columbia. The number of ill people identified in each state with the outbreak strain is as follows: Connecticut (1), District of Columbia (1), Georgia (1), Hawaii (1), Iowa (1), Illinois (50), Indiana (9), Massachusetts (1), Missouri (14), New York (1), Pennsylvania (2), South Dakota (1), Tennessee (1), Texas (1), Virginia (1), and Wisconsin (3). Among 81 persons for whom information is available, illness onset dates range from November 1 to December 14, 2010. Case-patients range in age from 1 to 75 years, with a median age of 28. Sixty-eight percent of patients are female. Among persons with available information, 23% reported being hospitalized. No deaths have been reported. Because the pulsed-field gel electrophoresis (PFGE) pattern associated with this particular Salmonella serotype commonly occurs in the United States, some of the cases identified may not be related to this outbreak.

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