Antibiotic resistance patterns and pigment production of streptococci of serological group B isolated from bovines and humans.
All 127 streptococci of serological group B isolated from bovines and humans were resistant to bacitracin (0.04 U) and gentamicin and susceptible to penicillin. Of the bovine isolates examined 10%, 8%, 22%, 2% and 30% were resistant to bacitracin (10 U), cefoxitin, clindamycin, erythromycin and tetracycline respectively. Of the human isolates 52%, 21%, 38%, 3% and 65% were resistant to bacitracin (10 U), cefoxitin, clindamycin, erythromycin and tetracycline respectively. Most of the bovine strains were susceptible, most of the human strains were resistant to bacitracin and tetracycline. A relation of tetracycline resistance to group B streptococcal microcapsule was proposed. Pigmentation studies revealed generally a weak pigmentation of bovine and a strong pigmentation of human group B streptococci. Antibiotic resistance patterns together with the ability to form a yellow to orange-red pigment might be used for characterization of individual cultures of group B streptococci.
Wibawan
I W
IW
Institut für Bakteriologie und Immunologie, Justus-Liebig-Universität Giessen.
Lautrou
Y
Y
Lämmler
C
C
D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D002417:Cattle; D002418:Cattle Diseases / Q000382:microbiology*; D004352:Drug Resistance, Microbial; D006801:Humans; D010860:Pigments, Biological / Q000096:biosynthesis*; D013290:Streptococcal Infections / Q000382:microbiology*; D013292:Streptococcus agalactiae / Q000187:drug effects* / Q000378:metabolism
D000900:Anti-Bacterial Agents; D010860:Pigments, Biological