Skip to main content

Table 1 Genotypes of cagA pre-EPIYA,cagA repeat, cag right-end junction and vacA of Vietnamese H. pylori strains.

From: Analysis of virulence factors of Helicobacter pylori isolated from a Vietnamese population

  

Total

(n = 103)

Ho Chi Minh

(n = 49)

Hanoi

(n = 54)

cagA pre-EPIYA

Vietnamese pre-EPIYA type

80 (77%)

39 (80%)

41 (76%)

 

East Asian pre-EPIYA type

13 (13%)

4 (8%)

9 (17%)

 

Western pre-EPIYA type

5 (5%)

3 (6%)

2 (4%)

cagA repeat

East Asian type (ABD type)

94 (93%)

43 (88%)

51 (94%)

 

Western type (ABC type)

4 (4%)

3 (6%)

1 (2%)

cagA (-)

 

5 (5%)

3 (6%)

2 (4%)

cag right-end

I

9 (9%)

8 (16%)

1 (2%)

 

II

87 (84%)

37 (76%)

50 (93%)

 

III

4 (4%)

2 (4%)

2 (4%)

 

N.D.

3 (3%)

2 (4%)

1 (2%)

vacA s*

s1

103 (100%)

49 (100%)

54 (100%)

 

s2

1 (1%)

0 (0%)

1 (2%)

vacA m†

m1

44 (43%)

15 (31%)

29 (54%)

 

m2

54 (52%)

32 (65%)

22 (41%)

 

N.D.

5 (5%)

2 (4%)

3 (6%)

  1. N.D.: could not be determined.
  2. * Both s1 and s2 were detected in one case.
  3. † The prevalence of vacA m1 is significantly higher in Hanoi than in Ho Chi Minh, p < 0.05
Back to article page

BMC Microbiology

ISSN: 1471-2180

Contact us