Antimicrobial susceptibilities of exfoliative toxigenic and non-toxigenic Staphylococcus hyicus strains in Japan

J Vet Med Sci. 2009 May;71(5):681-4. doi: 10.1292/jvms.71.681.

Abstract

Staphylococcus hyicus isolates (n=207), including 150 exfolitative toxigenic and 57 non-toxigenic strains, were examined for their susceptibility to 13 antimicrobial agents by using the dehydrated 96-well MIC panel system. The frequency of their resistance to penicillin and ampicillin was 76.8% (159/207), followed by erythromycin (56%, 116/207), trimethoprim-sulfamethoxazole (28.5%, 59/207), chloramphenicol (24.2%, 50/207), kanamycin (19.8%, 41/207), and doxycycline (1.4%, 3/207). Resistance to chloramphenicol and trimethoprim-sulfamethoxazole was significantly higher in toxigenic strains than non-toxigenic strains (p<0.01), whereas kanamycin and erythromycin resistance was significantly higher in non-toxigenic strains (p<0.01 and <0.05, respectively). Resistance to two or more antimicrobials was observed in 85.5% (177/207) of total strains, with a significantly higher occurrence in toxigenic strains (89.3%, 134/150 vs. 75.4%, 43/57; p<0.05).

MeSH terms

  • Animals
  • Anti-Bacterial Agents / pharmacology*
  • Drug Resistance, Bacterial
  • Epidermitis, Exudative, of Swine / microbiology*
  • Microbial Sensitivity Tests / veterinary
  • Staphylococcal Skin Infections / microbiology
  • Staphylococcal Skin Infections / veterinary*
  • Staphylococcus / drug effects*
  • Staphylococcus / growth & development
  • Staphylococcus / isolation & purification
  • Swine

Substances

  • Anti-Bacterial Agents