A national outbreak of Salmonella enteritidis infections from ice cream

Article Abstract:

Prompt action on the part of the Minnesota Department of Health prevented a potentially serious nationwide outbreak of Salmonella poisoning. In late September, 1994, the health department was notified of several cases of Salmonella poisoning among residents of southeastern Minnesota. Comparing 15 of these cases with 15 healthy people revealed that 73% of the people with Salmonella poisoning had eaten Schwan's ice cream, compared to 13% of the healthy volunteers. The department notified the media on Oct. 7 and on Oct. 9, the ice cream manufacturer initiated a nationwide recall. A total of 150 cases were eventually identified in Minnesota, 63% in the southeastern portion of the state. Based on the attack rate in Minnesota, an estimated 224,000 people nationwide developed Salmonella poisoning after eating Schwan's ice cream, which is distributed nationwide. But only 593 cases were reported to the CDC. The contamination was traced to the tanker, which had carried unpasteurized eggs before the ice cream base was shipped.

Demographic aspects, Ice cream, ices, etc., Ice cream, Salmonellosis, Contamination

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Transmission of Escherichia coli 0157:H7 infection in Minnesota child day-care facilities

Article Abstract:

Transmission of Escherichia coli 0157:H7 infection may be common among preschool-age children who attend day care. An Escherichia (E) coli 0157:H7 infection can lead to the development of hemorrhagic colitis (inflammation of the large intestine) and hemolytic uremic syndrome (HUS), a life-threatening condition characterized by kidney failure, anemia, decreased blood levels of platelets and a rash. Among 254 children under five years old who attended nine day-care centers in Minnesota, 38 (15%) were diagnosed with an E coli 0157:H7 infection over an 18-month period. Of the children diagnosed with an E coli 0157:H7 infection, five (13%) were suffering from HUS, 22 (56%) from bloody diarrhea without HUS, and five (13%) from non-bloody diarrhea. Six (16%) were without symptoms. Children with an E coli 0157:H7 infection should be remain at home until two stool cultures taken within two days are negative.

Health aspects, Diseases, Disease transmission, Day care centers, Preschool children, Escherichia coli infections

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