Journal of Antimicrobial Chemotherapy (1983) 12, 507-510
© 1983 The British Society for Antimicrobial Chemotherapy
research-article |
Plasmid-determined ß-lactamases identified in a group of 204 ampicillin-resistant Enterobacteriaceae
Departamento de Microbiología de la Facultad de Medicina de la Universidad Autónoma de Barcelona Bellaterra (Barcelona) Instituto Municipal de Investigación Médica, Paseo Marítimo s/n Barcelona-3, Spain
accepted 6 June 1983
Information is presented on the plasmid-determined ß-lactamases identified in 204 strains of ampicillin-resistant Enterobacteriaceae. The type most frequently identified was TEM-1 (in 85.3% of the strains), followed by SHV-1 (14.70%). Two types of plasmid-determined ß-lactamase were identified in 20 strains; in 18 of them one of the two was TEM-1 and in 13, SHV-1 (the TEM-1+SHV-1 combination was observed in 12 strains). In the 41 Klebsiella strains the most frequently identified enzyme was SHV-1 (in 28 of the strains) and the proportion of strains with two plasmid-determined ß-lactamases was higher than in the other species studied.
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