Dermabacter hominis was the cause of a peritoneal dialysis-associated perit
onitis. D. hominis was identified by phenotypic criteria and by sequencing
the 16S rRNA gene. Clinical cure was achieved with cefuroxime treatment des
pite the isolate's reduced susceptibility to this drug (MIC, 12 mg/liter) o
n in vitro testing. The successful treatment was probably due to the high c
oncentrations attained by intraperitoneal administration of the drug.