| epidemiology, antimicrobial susceptibility, pathogenicity, and significance of bacteroides fragilis group organisms isolated at los angeles county-university of southern california medical center. | the epidemiology of species of the bacteroides fragilis groups isolated at los angeles county-university of southern california medical center was examined. in addition, frequency of resistance to six beta-lactam antibiotics (cefmetazole, cefotetan, ceftizoxime, imipenem, penicillin, and cefoxitin) and to clindamycin, chloramphenicol, and metronidazole was determined for each species. while b. fragilis was most commonly isolated, the other species of the b. fragilis group accounted for half of t ... | 1991 | 2017610 |