title: Frequency of antimicrobial resistance and plasmid profiles of Escherichia coli strains isolated from milk.
abstract: Susceptibility to eight commonly used antimicrobial agents and plasmid profile analysis was done on forty one Escherichia coli strains isolated from milk. Most (95%) of the strains were resistant to sulphamethoxazole with a relatively low rate of resistance to the other antimicrobial agents. Twenty nine per cent of the isolates showed multiple resistance. The number of plasmids carried per strain was between 1 and 5, while plasmid sizes ranged between 107 and 1.0 megadaltons (MDa). There was no relationship between carriage of plasmids and antimicrobial resistance patterns.
authors.affiliation: Department of Public Health, Pharmacology and Toxicology and G. Nduhiu, Nairobi, Kenya.
authors.forename: J N
authors.initials: JN
authors.lastname: Ombui
authors.forename: J K
authors.initials: JK
authors.lastname: Macharia
authors.forename: G
authors.initials: G
authors.lastname: Nduhiu
mesh_terms: D000818:Animals; D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000145:classification / Q000187:drug effects* / Q000302:isolation & purification; D008892:Milk / Q000382:microbiology*; D008970:Molecular Weight; D010957:Plasmids; D012703:Serotyping