%0 Journal Article %A Smith, H. Williams %T Chloramphenicol Resistance in Escherichia Coli %D 1973 %J Journal of Medical Microbiology, %V 6 %N 3 %P 347-350 %@ 1473-5644 %R https://doi.org/10.1099/00222615-6-3-347 %I Microbiology Society, %X SUMMARY All of 670 apparently unrelated chloramphenicol-resistant strains of Escherichia coli of human and animal origin were multiply-resistant; over 66 per cent. of them were resistant to five or more antibiotics. The resistance of 96 per cent, of 400 of the strains could be transmitted, often at a high rate, to E. coli strain K12F−. A lower and variable proportion of the strains transmitted their resistance to nine other enterobacterial strains, principally pathogens; the rate of transmission was much lower than that which occurred to E. coli strain K12F−. %U https://www.microbiologyresearch.org/content/journal/jmm/10.1099/00222615-6-3-347