Peptostreptococcus ivorii, a recently described species of Gram-positive an
aerobic coccus, has so far rarely been found in human infections. The isola
tion of this anaerobe from a polybacterial skin abscess in a HIV-infected p
atient, which formed after antiretroviral therapy had been discontinued is
reported. Local treatment led to the abscess healing without specific antib
iotics. As the type strain was isolated from a mixed infected leg ulcer, Pe
ptostreptococcus ivorii could play an important role in synergistic infecti
ons of the skin. (C) 1999 Academic Press.