TABLE 5.
Highly related group of isolates
| Isolate | Source | Year | Countrya | ST (scheme A) | ST (scheme B) | ST (schemes A and B) | LEP serotype | Invasion potentialb |
|---|---|---|---|---|---|---|---|---|
| 00/043 | Human | 2000 | UK | 21 | 1 | 1 | 1 | 0.019 (0.0077) |
| 88/238 | Cow | 1988 | UK | 21 | 1 | 1 | NTc | 0.090 (0.0070) |
| 99/217 | Human | 1999 | DK | 21 | 1 | 1 | 50 | 0.020 (0.0062) |
| 99/206 | Poultry | 1999 | NL | 21 | 1 | 1 | 50 | 0.032 (0.0064) |
| 99/118 | Cow | 1999 | NL | 21 | 1 | 1 | 1 | 0.174 (0.020) |
| 88/231 | Cow | 1988 | UK | 21 | 1 | 1 | NT | NDd |
a
UK, United Kingdom; DK, Denmark; NL, The Netherlands.
b
Invasion potential was determined as the percentage of the inoculum applied to the INT407 cell monolayer that survived gentamicin treatment. Each isolate was tested in at least three independent assays. These data are from a single assay in which each isolate was tested in triplicate. Numbers in parentheses are standard deviations.
c
NT, nontypeable by the LEP method.
d
ND, not done.