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  • Title: [Epidemic outbreaks of salmonellosis caused by eating eggs].
    Author: Arnedo A, Bellido JB, Pac MR, Criado J, Usera MA, Mesanza I, González F, Pérez R, Cortés JM.
    Journal: Enferm Infecc Microbiol Clin; 1998 Nov; 16(9):408-12. PubMed ID: 9887627.
    Abstract:
    BACKGROUND: Investigation of outbreaks of foodborne infections (OFI) by Salmonella associated with the consumption of hens' eggs from a same classification center of Castellón, and determination of origin, extension and to take measures of control and prevention. METHODS: Descriptive and case-control studies, microbiologic analysis of feces, suspicious foods, and eggs. Sampling of eggs in the classification center for estimation the prevalence of Salmonlla. RESULTS: In 1992, 5 OFI were detected, 4 collective (1 school, 2 restaurants, and 1 residence) and 1 at home, by the consumption of food prepared with eggs: fried or boiled eggs, omelette, soufflé, 2 times, and home-made russian salad. Five hundred and forty-five persons were exposed and 364 were studied, with 100 case patients and 16 hospitalized. The range of attack rates was 10.5-87.0%. Samonella enteritidis (3 OFI) and S. typhimurium (3 OFI) were the infectious agents. In February 1993, the prevalence of Salmonella in eggs from the center was 0.26% (4/1.524) (S. enteritidis, 2 isolates, and S. typhimurium, 2 isolate), three on the shell, and one in the yolk. Two farmhouses of the six supplied were infected. CONCLUSIONS: These outbreaks indicate that salmonellosis by egg's consumption are frequent here and investigation of infection sources is necessary.
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