TABLE 2.
Enterotoxin gene patterns in Aeromonas reference strains
| Reference strain no. | Country | Source | No. of test strain isolates | Occurrence of enterotoxin gene amplicon profile: |
||||||
|---|---|---|---|---|---|---|---|---|---|---|
| alt | act/alt | act/alt/ast | act/alt/AssHPA | alt/ast | alt/AssHPA | None | ||||
| A. hydrophila (HG1)a | ||||||||||
| LMG 13439 | Germany | Unknown | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
| LMG 13440 | Germany | Unknown | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
| LMG 13658 | Switzerland | Feces | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
| LMG 13659 | Switzerland | Feces | 1 | 0 | 0 | 1 | 0 | 0 | 0 | |
| Subtotal | 4 | 0 | 0 | 2 | 0 | 2 | 0 | 0 | ||
| A. bestiarum (HG2) | ||||||||||
| LMG 13445 | Germany | Human | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| LMG 13446 | Germany | Environmental | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| LMG 13447 | Switzerland | Water | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| ATCC 14715 | France | Fish | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
| LMG 13664 | United States | Unknown | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| Subtotal | 5 | 1 | 3 | 0 | 1 | 0 | 0 | 0 | ||
| A. hydrophila (HG3) | ||||||||||
| LMG 13450 | Switzerland | Feces | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| LMG 13661 | Switzerland | Feces | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| CDC 043-84 | France | Water | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| A938 | United States | Unknown | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| A. salmonicida (HG3) | ||||||||||
| ATCC 33658Tb | United Kingdom | Fish | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| ATCC 33659 | United Kingdom | Fish | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| UniBernc | Switzerland | Fish | 11 | 0 | 2 | 0 | 9 | 0 | 0 | 0 |
| Subtotal | 17 | 1 | 7 | 0 | 9 | 0 | 0 | 0 | ||
| A. caviae (HG4) | ||||||||||
| LMG 13454 | Germany | Human | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| A3 | Germany | Unknown | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| ATCC 15468 | France | Guinea pig | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| A. caviae/A. media (HG5) | ||||||||||
| LMG 13460 | Germany | Environmental | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| LMG 13461 | Switzerland | Feces | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
| Subtotal | 5 | 3 | 0 | 0 | 0 | 0 | 1 | 1 | ||
| A. veronii (HG8/HG10) | ||||||||||
| LMG 13067 | Germany | Environmental | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| LMG 13693 | Germany | Environmental | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| LMG 13694 | Switzerland | Unknown | 1 | 0 | 1 | 0 | 0 | 0 | 0 | |
| A132 | Switzerland | Feces | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| Subtotal | 4 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | ||
| Total (%) | 35 | 5 | 14 (40) | 2 | 10 (29) | 2 | 1 | 1 | ||
a
Hybridization group.
b
Type strain.
c
University of Bern, Bern, Switzerland. Strains isolated from moribund fish (5).