TABLE 1.
Comparison of DL and PFGE typing results for MRSA study isolatesa
| Cluster/singleton designationb | No. of isolates in cluster | USA type(s) (no. of isolates) included in DL cluster on dendrogramc |
|---|---|---|
| A | 8 | 800 (4) T, 700 (3) T, 400 (1) T |
| B | 6 | 800 (6) |
| C | 41 | 300 (18) T, 500 (18) T, 800 (2), Brazilian (3) T |
| D | 7 | 400 (7) |
| E | 3 | 1000 (2), 800 (1) |
| F | 3 | 300 (3) |
| G | 4 | 1100 (4) |
| H | 4 | 100 (4) |
| I | 16 | 100 (16) T |
| J | 5 | 200 (5) T |
| K | 2 | 600 (2) T |
| 1 | 1 | 1000 T |
| 2 | 1 | 500 |
| 3 | 1 | 100 |
| 4 | 1 | 1100 T |
| 5 | 1 | 600 |
| 6 | 1 | 100 |
a
Isolates were obtained from Project ICARE and CDC strain collections.
b
Capital letters indicate DL clusters, and numbers indicate DL singleton strain types.
c
“T” indicates that the cluster contains the type strain for the given USA PFGE type or that the singleton is the type strain for that USA type.