TABLE 2.
Distribution of resistance genes in isolates from four countriesa
| Country (n)b | No. (%) of isolates with AR gene
|
|||||||
|---|---|---|---|---|---|---|---|---|
| tet(M)c | int-Tnd | tet(O) | erm(B)e | erm(A/TR) | mef(A/E)f,g | aphA-3e | aad-6e | |
| Hong Kong (132) | 102 (77) | 81 (61) | 13 (10) | 12 (9) | 3 (2) | 16 (12) | 11 (8) | 12 (9) |
| South Korea (186) | 165 (89) | 157 (84) | 12 (6) | 20 (11) | 0 | 4 (2) | 19 (10) | 22 (12) |
| Australia (76) | 62 (82) | 40 (53) | 1 (1) | 1 (1) | 3 (4) | 1 (1) | 0 | 0 |
| New Zealand (118) | 97 (82) | 67 (57) | 3 (3) | 4 (3) | 6 (5) | 1 (1) | 2 (2) | 2 (2) |
| Total (512) | 426 (83) | 345 (67) | 29 (6) | 37 (7) | 12 (2) | 22 (4) | 32 (6) | 36 (7) |
Boldface areas show data that are significantly different from others in the same column.
n, no. of isolates.
A significantly smaller proportion of Hong Kong isolates than of those from all other countries contained tet(M) (P = 0.03).
A significantly greater proportion of South Korean isolates than of those from all other countries contained int-Tn (P = < 0.0001).
A significantly greater proportion of Asian than of Australasian isolates contained tet(O) (P = 0.01), erm(B) (P = 0.003), aphA-3 (P = 0.0003), and aad-6 (P < 0.0001).
A significantly greater proportion of Hong Kong isolates than of those from all other countries contained mef(A/E) (P < 0.0001).
All but one of the mef genes were mef(E).