title: Ampicillin-resistant Enterococcus raffinosus in an acute-care hospital: case-control study and antimicrobial susceptibilities.
abstract: A prospective study identified 9 (32%) of 28 ampicillin-resistant (MIC greater than or equal to 16 micrograms/ml) enterococcus isolates as Enterococcus raffinosus. A case-control study found no significant differences with respect to underlying diseases, catheterization, or surgery between patients with ampicillin-resistant E. raffinosus and those with ampicillin-susceptible Enterococcus spp. Prior treatment with antibiotics and prolonged hospitalization were more frequent among patients with ampicillin-resistant E. raffinosus. Patients with the same strain (determined by plasmid analysis) were frequently hospitalized concurrently.
authors.affiliation: Medical Service, Veterans Administration Medical Center, Martinez, California 94553.
authors.forename: V A
authors.initials: VA
authors.lastname: Chirurgi
authors.forename: S E
authors.initials: SE
authors.lastname: Oster
authors.forename: A A
authors.initials: AA
authors.lastname: Goldberg
authors.forename: M J
authors.initials: MJ
authors.lastname: Zervos
authors.forename: R E
authors.initials: RE
authors.lastname: McCabe
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000668:Ampicillin Resistance; D002140:California / Q000453:epidemiology; D016022:Case-Control Studies; D003428:Cross Infection / Q000188:drug therapy / Q000453:epidemiology* / Q000382:microbiology; D016983:Enterococcus / Q000187:drug effects / Q000302:isolation & purification; D005260:Female; D016908:Gram-Positive Bacterial Infections / Q000188:drug therapy / Q000453:epidemiology* / Q000382:microbiology; D006787:Hospitals, Veterans; D006801:Humans; D008297:Male; D008875:Middle Aged