Roseomonas mucosa infective endocarditis in patient with systemic lupus erythematosus: case report and review of literature

BACKGROUND: Roseomonas mucosa, as a Gram-negative coccobacilli, is an opportunistic pathogen that has rarely been reported in human infections. Here we describe a case of bacteremia in an infective endocarditis patient with systemic lupus erythematosus (SLE). CASE PRESENTATIONS: A 44-year-old female patient with SLE suffered bacteremia caused by Roseomonas mucosa complicated with infective endocarditis (IE). The patient started on treatment with piperacillin-tazobactam and levofloxacin against Roseomonas mucosa, which was switched after 4 days to meropenem and amikacin for an additional 2 weeks. She had a favorable outcome with a 6-week course of intravenous antibiotic therapy. DISCUSSION AND CONCLUSIONS: Roseomonas mucosa is rarely reported in IE patients; therefore, we report the case in order to improve our ability to identify this pathogen and expand the range of known bacterial causes of infective endocarditis.