Antimicrobial susceptibility pattern of Aeromonas and Plesiomonas strains isolated from patients with diarrhoea in Nigeria.

The susceptibilities of 53 isolates of Aeromonas species and 16 Plesiomonas shigelloides, from patients with diarrhoea, to 15 commonly used antimicrobial agents were determined by the disk-agar diffusion technique. All the strains were susceptible to ofloxacin, a recent quinolone. Also, over 70 pc of our strains were susceptible to gentamicin, carbenicillin, ceftriaxone, erythromycin, Chloramphenicol, tetracycline and co-trimoxazole. However, less than 30 pc of our strains were susceptible to ampicillin. Results of this in vitro study indicate that for cases of serious Aeromonas or Plesiomonas infections requiring antimicrobial therapy, ofloxacin, gentamicin, carbenicillin or chloramphenicol could be useful.