Table 3.
Correspondence between traditional serotyping (TS) and pulsed field gel electrophoresis of isolates of O26 (n = 71), O103 (n = 62), O111 (n = 17), and O157 (n = 50) initially serogrouped by PCR.
| Serogroup | #Clusters 1 | #(%) NT 2 Isolates | #(%) PCR Mismatch TS Serogroup | #PCR and TS Matching Isolates | Isolates Where PCR and Traditional Serotyping Matched Serogroup #Isolates Within Serogroup-Specific Clusters #Unique Isolates |
|||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| O26:NM | O26:H9 | O26:H11 | O26:H32 | |||||||||
| O26 | 12 | 5(7.0) | 29 (40.8) | 42 | 11/23 | 1/3 | 2/6 | 1/3 | 17 (40.4) | |||
| O103:NM | O103:H2 | O103:H6 3 | O103:H7 | O103:H8 | O103:H14 | O103:H19 | ||||||
| O103 | 12 | 2(3.2) | 2 (3.2) | 58 | 4/14 | 8/11 | 1/1 | 0/3 | 4/4 | 2/4 | 0/1 | 22 (37.9) |
| O103:H21 | O103:H25 | O103:H38 | O103:H43 | |||||||||
| 6/10 | 0/1 | 2/6 | 0/1 | |||||||||
| O111:NM | O111:H8 | |||||||||||
| O111 | 4 | 3(17.6) | 0 (0) | 14 | 5/6 | 8/8 | 0 (0) | |||||
| O157:NM | O157:H7 | O157:H12 | O157:H29 | |||||||||
| O157 | 7 | 2(4.0) | 6(12.0) | 42 | 3/5 | 24/29 | 0/2 | 0/2 | 9 (21.4) | |||
1 Clusters where isolates show a minimum of 90% similarity. 2 NT, not typeable by traditional serotyping. 3 Isolate clustered with non-motile (NM) isolate.