TABLE 2.
PFGE typing of O3:K6 strains of V. parahaemolyticus isolated before and after 1996
| PFGE patterna | No. of isolate (%) | Origin of isolate (n)b | Year(s) isolated | Origin of travelers (n)c |
|---|---|---|---|---|
| Before 1996 | ||||
| A1 | 2 | Japan (2) | 1987 | Thailand (2) |
| A2 | 1 | Japan (1) | 1992 | Singapore (1) |
| A3 | 9 | Japan (9) | 1982–1993 | Unknown (1), Singapore (1), Hong Kong (2), Maldive Islands (3), Thailand (2) |
| B2 | 1 | Taiwan (1) | 1993 | |
| R | 1 | Japan (1) | 1983 | Singapore (1) |
| After 1996 | ||||
| I1 | 155 (81.2) | Korea (15) | 1998 | |
| India (1) | 1996 | |||
| Japan (4) | 1996 | Singapore (1), Thailand (3) | ||
| Taiwan (135) | 1997 | Thailand (2), Philippines (2) | ||
| I2 | 1 (0.5) | Taiwan (1) | 1997 | |
| I3 | 3 (1.6) | Korea (1) | 1998 | |
| Taiwan (2) | 1997 | Thailand (1) | ||
| I4 | 1 (0.5) | Taiwan (1) | 1997 | |
| I5 | 25 (13.1) | Korea (1) | 1998 | |
| India (1) | 1996 | |||
| Taiwan (23) | 1997 | Philippines (2) | ||
| I6 | 2 (1.0) | Taiwan (2) | 1997 | Indonesia (1), Singapore (1) |
| I7 | 1 (0.5) | Taiwan (1) | 1997 | |
| I8 | 3 (1.6) | Korea (1) | 1998 | |
| Taiwan (2) | 1997 |
a
Designation of these patterns followed a revised PFGE typing scheme for the clinical strains collected between 1992 and 1995 in our laboratory.
b
n, number of isolates.
c
Some strains were isolated from travelers returning from other Asian countries to the place of the origin of the isolates; others are domestic strains. n, number of strains.