TABLE 1.
Distributions of PFGE types, lineages, and tir alleles of strains isolated from HEPa
| HEP | No. of positive enrichments received | No. of enrichments from which an isolate was obtained | No. (%) of isolates identical to predominant RDP | No. (%) of isolates closely related to predominant RDP | LSPA lineage | tir allele |
|---|---|---|---|---|---|---|
| A | 8 | 8 | 8 (100) | 8 (100) | I/II | T |
| B | 16 | 9 | 9 (100) | 9 (100) | I | T |
| C | 11 | 10 | 9 (90) | 9 (90) | I/II | T |
| D | 9 | 9 | 9 (100) | 9 (100) | I/II | T |
| E | 7 | 7 | 6 (86) | 6 (86) | I, II | T, A |
| F | 12 | 8 | 7 (88) | 8 (100) | I | T |
| G | 7 | 6 | 6 (100) | 6 (100) | I/II | T |
| H | 21 | 18 | 13 (72) | 18(100) | I/II | T |
| I | 20 | 20 | 15 (75) | 20 (100) | I | T |
| J | 20 | 17 | 16 (94) | 16 (94) | I | T |
| Kb | 32 | 10 | 10 (100) | 10 (100) | I/II | T |
| L | 9 | 9 | 9 (100) | 9 (100) | I | T |
| M | 13 | 12 | 11 (92) | 11 (92) | I/II | T |
| N | 18 | 18 | 9 (50) | 16 (89) | I/II | T |
| O | 44 | 44 | 43 (98) | 44 (100) | I | T |
| P | 65 | 61 | 61 (100) | 61 (100) | I | T |
| Q | 50 | 50 | 50 (100) | 50 (100) | II | A |
| R | 50 | 35 | 33 (94) | 35 (100) | II | A |
| S | 44 | 43 | 42 (98) | 42 (98) | I/II | T |
| T | 17 | 15 | 15(100) | 15 (100) | II | A |
| U | 166 | 157 | 157 (100) | 157 (100) | I/II | T |
a
Abbreviations: PFGE, pulsed-field gel electrophoresis; HEP, high event period; RDP, restriction digest pattern.
b
Low recovery of isolates attributed to enrichments received after 10 mo of storage at 4°C.