ANTIMICROBIAL SUSCEPTIBILITY OF 51 STRAINS OF HEMOPHILUS-PLEUROPNEUMONIAE

  • 1 January 1984
    • journal article
    • research article
    • Vol. 48  (1) , 47-50
Abstract
Strains of H. pleuropneumoniae (51) were tested for susceptibility to 27 antimicrobial agents using agar disc diffusion, broth-tube dilution and microdilution methods. There was generally good agreement between the interpretation of the disc diffusion inhibition zones and the actual minimal inhibitory concentrations obtained with the dilution methods. The agreement between the results obtained with the broth-tube dilution method and the microdilution method was very good. Three strains were resistant to penicillin, ampicillin, carbenicillin, methicillin and tetracycline. One of those was also resistant to chloramphenicol. Forty strains were resistant to streptomycin, 23 to novobiocin and 7 to triple sulfa. It is thus necessary to consider resistance development against antimicrobial agents chosen for the treatment of pleuropneumonia in pigs caused by H. pleuropneumoniae.