Persons infected with the outbreak strain of Salmonella Litchfield, United States, by state, January 1 to April 2, 2008.

As of April 2, 2008, state health departments identified 51 ill persons in 16 states infected with Salmonella Litchfield with the same genetic fingerprint. Ill persons with the outbreak strain have been reported from Arizona (1 person), California (10), Colorado (1), Georgia (2), Illinois (1), Missouri (1), New Jersey (2), New Mexico (1), New York (5), Ohio (1), Oklahoma (2), Oregon (5), Tennessee (1), Utah (5), Washington (10), and Wisconsin (3). Onset dates, which are known for 50 patients, ranged from January 10 to March 10, 2008. Their ages range from <1 to 93 years; 59% are female. At least 16 persons have been hospitalized. No deaths have been reported. In addition, 9 ill persons with the outbreak strain have been reported in Canada.