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Streptococcus mitis. A cause of serious infection in adults

1987; American Medical Association; Volume: 147; Issue: 5 Linguagem: Inglês

10.1001/archinte.147.5.885

1538-3679

Brian A. Catto,

Streptococcal Infections and Treatments

Twenty strains of Streptococcus mitis were isolated from blood or body fluids at the Cleveland Veterans Administration Medical Center from Jan 1, 1981, to April 30, 1984. Fifteen (75%) isolates were considered contaminants. Five (25%) were clinically important and associated with a serious infection of the oropharynx or gastrointestinal tract (three of five), endovascular system (one of five), or a prosthetic hip. Four of five patients required surgical intervention for treatment. Two of five died; one death was directly attributable to S mitis infection. Eighteen strains were available for detailed bacteriologic study. Three strains had a minimum inhibitory concentration of greater than 0.1 micrograms/mL of penicillin and six other strains were tolerant to penicillin. This review suggests that S mitis can be an important pathogen in adults and may cause infections other than endocarditis.