Susceptibility patterns ofCampylobacter pyloridis

Thirty strains of Campylobacter pyloridis, isolated from Australia, England, Peru, and U.S.A., were studied. An agar dilution technique was used to determine the susceptibility of the strains to 13 antimicrobial agents and 2 antiulcer compounds. All 30 strains, regardless of geographic source, demonstrated identical susceptibility patterns. Strains were susceptible to 9 of the 13 antimicrobial agents: amoxicillin, cephalothin, doxycycline, erythromycin, furazolidone, metronidazole, nitrofurantoin, norfloxacin, and tetracycline. Strains were resistant to both antiulcer compounds (cimetidine and ranitidine) and to nalidixic acid, sulfamethoxazole, trimethoprim, and the combination of trimethoprim/sulfamethoxazole.