TABLE 2.

Frequency of erythromycin resistance transfer between C. difficile and B. fibrisolvens strains

Donor strainRecipient strainAvg transfer frequencyNo. of replicatesProgeny saved for further study
Per donorPer recipient
CD512221R4.8 × 10−74.6 × 10−73RE1-RE9
RE11.2306.4 × 10−43.6 × 10−53bTE1-bTE9
CD511.2304.2 × 10−63.3 × 10−73TE1-TE9