The susceptibility ofSpirillum minus andBorrelia duttoni to streptomycin and penicillin

Summary An investigation into the effect of streptomycin and penicillin onSpirillum minus infections in mice, guinea pigs and hamsters, showed that streptomycin effectively controlledSpirillum infections in guinea pigs, but that this antibiotic was not always efficacious in mice and hamsters. Penicillin, when given in rather high dosages, seemed to be more reliable. Both antibiotics were absolutely inadequate for the control ofBorrelia duttoni infections in mice.