Characterization of ESBL-producing Escherichia coli ST131 isolates from Port Elizabeth.

This study investigated resistance determinants and genetic relatedness in extended-spectrum beta-lactamase (ESBL)-producing Escherichia coli isolates. PCR and DNA sequencing were used for screening isolates for blaCTX-M, blaTEM, and blaSHV (qnrA, qnrB, qnrC, qnrD, qnrS, aac(6)-lb-cr, and qepA) resistance genes and the sequence type 131 (ST131) clone. Genetic relatedness of E.

Antibiotic susceptibilities and resistance genes of Ureaplasma parvum isolated in South Africa.

Objectives: There is only limited information on the antimicrobial susceptibilities and resistance genes of Ureaplasma parvum in South Africa. This study was designed to detect and characterize resistance genes in U. parvum.