Plasmid profiles and antibiotic susceptibility of<i>Haemophilus pleuropneumoniae</i>serotypes 1, 3, 5, and 7

Abstract

This paper describes the plasmid profiles obtained for 73 of 96 field isolates of Haemophilus pleuropneumoniae serotypes 1, 3, 5, and 7. We also characterized the antibiotic susceptibilities of these 96 isolates. Because of the high proportion of isolates resistant to some of the antibiotics, no conclusions can be drawn as to the role of plasmids in antibiotic resistance.