TABLE 2.
Distribution of phenotypic and genotypic characteristics based on subtypes, types, and sample sites
| No. (%) of:
|
No. (%) of isolates recovered from sample siteb or time
|
No. (%) of isolates overall | ||||||
|---|---|---|---|---|---|---|---|---|
| Subtypesa | Typesa | Feces | Hide | Preevis. | Postevis. | Final | ||
| Cluster | ||||||||
| B | 47 (61) | 27 (57) | 39 (43) | 24 (63) | 88 (59) | 38 (63) | 2 (33) | 191 (56) |
| C | 21 (27) | 15 (32) | 29 (32) | 9 (24) | 31 (21) | 3 (5) | 2 (33) | 74 (22) |
| A | 7 (9) | 3 (6) | 22 (24) | 5 (13) | 28 (19) | 19 (32) | 2 (33) | 76 (22) |
| stx genotype | ||||||||
| stx1 | 3 (4) | 3 (6) | 3 (3) | 0 (0) | 2 (1) | 0 (0) | 0 (0) | 5 (1) |
| stx2 | 24 (31) | 16 (34) | 58 (64) | 7 (18) | 54 (36) | 25 (42) | 3 (50) | 147 (43) |
| stx1 stx2 | 52 (68) | 31 (66) | 30 (33) | 31 (82) | 92 (62) | 35 (58) | 3 (50) | 191 (56) |
| Motility | ||||||||
| Motile | 69 (90) | 41 (87) | 63 (69) | 24 (63) | 128 (86) | 50 (83) | 5 (83) | 270 (79) |
| Nonmotile | 15 (19) | 11 (23) | 28 (31) | 14 (37) | 20 (14) | 10 (17) | 1 (17) | 73 (21) |
a
The sum of the number of subtypes and types carrying specified stx genes or classified by motility is greater than the total numbers of each because some subtypes and types include isolates with more than one Shiga toxin profile or include both motile and nonmotile isolates (see Fig. 1).
b
Abbreviations: Preevis., preevisceration; Postevis., postevisceration.