TABLE 1.
Strains of C. jejuni used in this study and colony counts from repeated microbiological recovery experiments.
| Mixture† | Strain | Source‡ | CGF Subtype | C3GFdb frequency and rank¥ | MLST§ | Non-enrichment Recovery | Enrichment Recovery | ||
| Trial 1 (n = 100) | Trial 2 (n = 88) | Trial 1 (n = 100) | Trial 2 (n = 83) | ||||||
| A | CI_5178 | W | 957.1.1 | 274 (1) | ST-45 | 42 | 52 | 90 | 73 |
| A | CI_4685 | W | 844.3.1 | 13 (2) | ST-692 | 12 | 11 | 6 | 10 |
| A | CI_5043 | W | 540.1.3 | 3 (3) | ST-1224 | 31 | 18 | 2 | 0 |
| A | CI_5039 | W | 540.1.4 | 1 (4) | ST-4029 | 15 | 7 | 2 | 0 |
| Trial 1 (n = 99) | Trial 2 (n = 100) | Trial 1 (n = 99) | Trial 2 (n = 100) | ||||||
| B | CE_M_10_4053 | P | 169.1.2 | 593 (1) | ST-982 | 32 | 26 | 45 | 49 |
| B | CI_2669 | W | 782.4.2 | 27 (2) | ST-2524 | 20 | 28 | 16 | 17 |
| B | 07_2680 | H | 83.7.1 | 38 (3) | ST-918 | 18 | 16 | 8 | 5 |
| B | CGY_HR_241 | H | 27.1.3 | 24 (4) | ST-452 | 29 | 30 | 30 | 29 |
| Trial 1 (n = 98) | Trial 2 (n = 98) | Trial 1 (n = 99) | Trial 2 (n = 99) | ||||||
| C | 07_1875 | H | 735.5.1 | 217 (1) | ST-42 | 34 | 18 | 52 | 53 |
| C | CI_4820 | W | 812.2.1 | 51 (2) | ST-42 | 23 | 46 | 21 | 29 |
| C | CE_R_11_0073 | P | 18.1.2 | 71 (3) | ST-1698 | 13 | 12 | 0 | 1 |
| C | CE_R_11_0249 | P | 123.1.2 | 67 (4) | ST-51 | 28 | 22 | 26 | 16 |
†Mixture indicates the pooled strain mixtures used in recovery experiments. ‡Source: W – Water; P – Poultry; H – Human. ¥Subtype frequency indicates the number of isolates of matching subtype in the Canadian Campylobacter Comparative Genomic Fingerprinting database (C3GFdb). Rank number in parentheses indicates rank given to each subtype within its mixture, corresponding to the respective frequency of its subtype cluster in the C3GFdb. § MLST Sequence Type.