FIG. 3.

Characteristics of strains and BSI according to PFGE groups. The dendrogram was calculated using the relationships between pulsotypes determined by the unweighted-pair group method using arithmetic means and the Adanson pulsogrouping program (dissimilarity). Results of other molecular tests, including agr and SCCmec typing as well as determination of toxin content, are also indicated. Based on previous determinations, the origins of isolates composing each cluster (either HA or CA strains) appear in the figure. NK, not known.