Transmissible drug resistance in Escherichia coli isolated from healthy dogs, cattle, sheep and horses

Abstract

The antibiotic resistance patterns and the distribution of R-factors among Escherichia coli isolated from apparently healthy dogs, cattle, sheep and horses were studied. It was found that 102 strains (16.48 per cent) of a total of 619 isolates were resistant to one or more drugs. Twenty-six per cent (27 strains) of the resistant strains were capable of transferring either a part or the entire resistance patterns to the sensitive recipient strain. These results indicates that antibiotic resistance and R-factors are not particularly widespread among animals whose diet does not cotain antimicrobial drugs.

Drug Resistance and Conjugative R Plasmids in Fecal Escherichia coli Strains Isolated from Healthy Younger Animals (Chickens, Piglets, Calves) and Children

“…Especially at the younger ages, infections are not infrequent and many kinds of drugs have been used for prevention of infection as well as for therapy of infectious diseases. This situation may cause the appearance and spread of drug-resistant strains, as has been suggested in many reports (1,4,14,16,19,22,23,25).…”

“…Especially at the younger ages, infections are not infrequent and many kinds of drugs have been used for prevention of infection as well as for therapy of infectious diseases. This situation may cause the appearance and spread of drug-resistant strains, as has been suggested in many reports (1,4,14,16,19,22,23,25).In a previous paper we presented a detailed survey of resistant strains among livestock and adult humans. Examining as many as 30 strains from each individual animal, we hoped to isolate resistant strains that composed a smaller fraction of the total Escherichia coli cells.…”

Antimicrobial resistance pattern of Escherichia coli strains isolated from poultry farmers and poultry slaughterers in Morocco

“…During the slaughtering process of poultry birds, there can be occurring of fecal contamination through the guts of these birds with multiresistant bacteria especially E. coli [8,9]. The human intestinal tract is the ideal place where antibiotic resistant bacteria can transfer their resistance genes to the endogenous human flora [10].…”

Distribution of R-factor and β-lactamase Production in Ampicillin Resistant Strains of Enterobacteriaceae Isolated from Equines

“…Antibiotic resistance in bacteria may arise due to spontaneous mutation or extrachromosomal inheritance brought about by selective pressure of antibiotics used in therapy and prophylaxis or for growth promotion (Linton, 1977;Nazer, 1980 andHolmberg et al, 1984). This resistance can be transferred from one bacterium to another as genetic elements on plasmids (Mitsuhashi, 1971).…”