Sensitivity in vitro of Escherichia coli Isolated from Fecal Samples of Domestic Animals and Healthy Human Beings to Various Chemotherapeutic Agents
1972 Volume 25 Issue 6 Pages 295-301
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1972 Volume 25 Issue 6 Pages 295-301
A total of 937 strains of Escherichia coli isolated from fecal samples of healthypigs, cows, and human beings were examined for sensitivity to 13 antibacterial drugs, using the agar plate dilution method. The results obtained are summarized as follows.
A high incidence of drug resistance, mostly of infective type, was found among the pig strains. Complex resistance patterns were a common feature for these strains, some of which were resistant to six drusg, tetracycline (TC), streptomycin (SM), chloramphenicol (CP), sulfadimethoxine (SA), Kanamycin (KM), and aminobenzyl-penicillin (AB-PC).
A few of the cow strains were resistant to at least one antibacterial drug. All the isolated strains had a high sensitivity to KM, fradiomycin, gentamycin, (AB-PC), cephaloridine, polymyxin B, colistin (CL), nitrofratorizine, and nalidixic acid. Most of the human strains were sensitive to many antibacterial drugs other than TC, SM, and SA.
