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Infective endocarditis due to Citrobacter koseri in an immunocompetent adult
A Dzeing-Ella1, T A Szwebel, J Loubinoux
1Service de Microbiologie, Service de Médecine Interne, Assistance Publique-Hôpitaux de Paris, Hôtel-Dieu 1, place du Parvis Notre-Dame, 75181 Paris Cedex 4, France.
Abstract:
Citrobacter koseri (formerly Citrobacter diversus) is a motile gram-negative bacillus usually arising from urinary and gastrointestinal tracts. C. koseri rarely causes infection in immunocompetent patients and, thus far, has been considered an opportunistic pathogen. We report on a 30-year-old man, with no medical past, hospitalized for infective aortic endocarditis due to C. koseri. Four weeks of antibiotherapy led to a full recovery for this patient. However, this case is unusual, as previous history and 1 year of follow-up showed no features of intercurrent immunosuppression. Microbiological diagnosis was based on using 16S rRNA gene sequencing.
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