http://www.cdc.gov/salmonella/typhimurium/
CDC is collaborating with public health officials in many states and the United States Food and Drug Administration (FDA) to investigate a multistate outbreak of human infections due to Salmonella serotype Typhimurium.
As of 9pm EDT, Wednesday, January 14, 2009, 448 persons infected with the outbreak strain of Salmonella Typhimurium have been reported from 43 states. The number of ill persons identified in each state is as follows: Alabama (1), Arizona (8), Arkansas (4), California (60), Colorado (10), Connecticut (8), Georgia (6), Hawaii (1), Idaho (10), Illinois (5), Indiana (3), Iowa (1), Kansas (2), Kentucky (3), Maine (4), Maryland (7), Massachusetts (40), Michigan (25), Minnesota (33), Missouri (8), Mississippi (1), Nebraska (1), New Hampshire (11), New Jersey (18), New York (18), Nevada (5), North Carolina (1), North Dakota (10), Ohio (57), Oklahoma (2), Oregon (5), Pennsylvania (13), Rhode Island (4), South Dakota (2), Tennessee (8), Texas (6), Utah (3), Vermont (4), Virginia (20), Washington (13), West Virginia (2), Wisconsin (3), and Wyoming (2). Among the 432 persons with dates available, illnesses began between September 08 and December 31, 2008. Patients range in age from <1>
The investigation is ongoing, and exposures to peanut butter and other peanut butter-containing products are being examined. Preliminary analysis of an epidemiologic study conducted by CDC and public health officials in multiple states comparing foods eaten by ill and well persons has suggested peanut butter as a likely source of the bacteria causing the infections. To date, no association has been found with common brand names of peanut butter sold in grocery stores.
An epidemiologic investigation by the Minnesota Department of Health suggested King Nut creamy peanut butter as a likely source of Salmonella infections among many ill persons in Minnesota. The Minnesota Department of Agriculture Laboratory isolated the outbreak strains of Salmonella Typhimurium from an open 5-pound container of King Nut brand creamy peanut butter. The product is distributed in Minnesota to establishments such as long-term care facilities, hospitals, schools, universities, restaurants, delis, cafeterias, and bakeries. It is not sold directly to consumers and is not known to be distributed for retail sale in grocery stores.
Clusters of infections in several states have been reported in schools and other institutions, such as long-term care facilities and hospitals. King Nut is the only brand of peanut butter used in those facilities for which we have information.
CDC and other public health officials are continuing to conduct surveillance for cases of infection with the outbreak strains, and to gather and analyze data on exposures to peanut butter and other peanut butter-containing products that may be associated with illness.
Most persons infected with Salmonella develop diarrhea, fever, and abdominal cramps 12–72 hours after infection. Infection is usually diagnosed by culture of a stool sample. The illness usually lasts 4 to 7 days. Although most people recover without treatment, severe infections may occur. Infants, elderly persons, and those with impaired immune systems are more likely than others to develop severe illness. When severe infection occurs, Salmonella may spread from the intestines to the bloodstream and then to other body sites and can cause death unless the person is treated promptly with antibiotics.