Table 2.
Prevalence of vacA s-region allotypes in samples from East Asia, Western countries, or Venezuela
s allotype
|
Percent of sample showing specified allotypes | |||
---|---|---|---|---|
East Asia (n = 15)
|
Western countries (n = 15)
|
Venezuela | ||
Puerto Ayacucho (n = 17) | Caracas (n = 13) | |||
s1 | 100 | 67 | 94 | 46 |
s1a | 27 | 20 | 0 | 0 |
s1b | 0 | 47 | 36 | 46 |
s1c | 73 | 0 | 58 | 0 |
s2 | 0 | 33 | 6 | 53 |
s allotype was determined by sequence of PCR products using primers VAIF and VAIX as described.