Serratia marcescens (S. marcescens) is an Enterobacteriaceae microorganism that is widespread in the environment, which may be\nthe source of nosocomial infections, rare in the newborn but severe, and often in the form of outbreaks. The aim of our study is to\nreport our experience, during an outbreak of S. marcescens, to show the severity of this germ, with review of the literature. Our\nstudy was retrospective, including 8 newborns with S. marcescens nosocomial infection, collected in the neonatal intensive care\nunit of Mohammed VI University Medical Hospital, during the epidemic period, over a period of 2 months (July and August\n2016). The mean gestational age of the cases was 36 weeks of amenorrhea. Boys accounted for 75% of the cases. The average weight\nwas 1853 grams. All the patients were initially placed under empiric antibiotic therapy based on ceftriaxone and gentamicin. The\nmean duration of nosocomial infection, diagnosed in all cases by blood cultures, was 7 days. The strains of S. marcescens were in\n75% of the cases sensitive to the cephalosporins, intermediate sensitivity in 12.5% of cases and resistant in 12.5% of cases. The\noutcome was fatal in 62.5% of cases. S. marcescens nosocomial infections are often reported on epidemic series, and their\neradication is not always easy.
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