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  • Title: A nosocomial outbreak of Salmonella enteritidis associated with lyophilized enteral nutrition.
    Author: Matsuoka DM, Costa SF, Mangini C, Almeida GM, Bento CN, Van Der Heijden IM, Soares RE, Gobara S, Távora LG, Levin AS.
    Journal: J Hosp Infect; 2004 Oct; 58(2):122-7. PubMed ID: 15474183.
    Abstract:
    Outbreaks of Salmonella spp. gastro-enteritis in hospitals are of concern because of the increased susceptibility of patients and associated high morbidity. This study is a report of a nosocomial outbreak of Salmonella enteritidis associated with enteral nutrition. In December 1999, one sample of enteral feed tested positive for S. enteritidis. During the subsequent 6 weeks, eight cases of nosocomial salmonellosis occurred. Patients involved in the outbreak were aged 19-79 years (median = 36.5), and salmonella was isolated from the blood of two patients. All patients were receiving enteral nutrition at the time and all had diarrhoea. Three patients died. All 13 employees of the Nutrition Department were asymptomatic and their stool samples were negative. Environmental and water samples were also negative. The diet, however, contained lyophilized egg albumin. Molecular typing showed that the isolates of seven patients were indistinguishable from the one obtained from the enteral diet. It was thought that the nosocomial salmonellosis probably occurred due to the use of a commercial lyophilized diet. Another method of processing diets may be necessary to ensure patient safety.
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