Affiliation:
1. Laboratoire de Microbiogie
2. Service de Chirurgie Plastique, Faculté de Médecine, Hôpital Trousseau, 37044 Tours, France
Abstract
ABSTRACT
Following a change in surgical practice, we noted that the rate at which
Staphylococcus lugdunensis
was isolated from samples from the plastic surgery unit of our hospital increased considerably. We investigated the sources of these
S. lugdunensis
strains, and we found that in the case of drain colonization or surgical site infection, the strain was more likely to have come from the patient's skin bacteria when the pubic site had been shaved preoperatively. To test the hypothesis of pubic site colonization, we evaluated the prevalence of
S. lugdunensis
carriage among the cutaneous flora of the inguinal area. We found that 22% of 140 incoming patients carried
S. lugdunensis
in this area and that carriage at both inguinal folds was frequent (68% of carriers). A study of the genetic structure of the total population, including the clinical (
n
= 18) and the commensal (
n
= 53) strains, revealed that the diversity of the species was low and that the population was composed of two major groups that diverged at a distance of 35%. No particular characteristics made it possible to distinguish between clinical and commensal strains. Only isolates producing β-lactamase were homogeneous; six of the eight β-lactamase-positive strains displayed the same pulsed-field gel electrophoresis pattern.
Publisher
American Society for Microbiology
Cited by
87 articles.
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