Antimicrobial resistance patterns of Bacteroides fragilis group organisms in Korea

Antimicrobial resistance patterns of 913 clinical isolates of Bacteroides fragilis group organisms were monitored during an 8-year period in Korea. In general the resistance rates of the non-fragilis B. fragilis group species were higher than those of B. fragilis for all the drugs tested. The rate of resistance to clindamycin remarkably increased and those to some drugs such as piperacillin and cefotaxime also increased. No isolates were found to be resistant to imipenem, metronidazole, or chloramphenicol. and inhibitor combinations and cefoxitin were more active than the other . Therefore, these agents may be considered when empirical selection of antimicrobial agents is required to treat severe anaerobic infections.