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Table 3 HBV marker status, demographics, and risk factors among individuals from Yanomami, Brazil

From: Seroprevalence of hepatitis B, C, and D and associated factors in the semi-isolated Yanomami Amazonian indigenous community

 

HBV Infection

Resolved Infection

Vaccine immunity

Susceptibility

p

n(%)

n(%)

n(%)

n(%)

Overall

38 (9.6)

171 (43.3)

81 (20.5)

105 (26.6)

 

Gender

     

 Female

22 (9.4)

94 (40.2)

55 (23.5)

63 (26.9)

0.23

 Male

16 (10.0)

77 (48.1)

25 (15.6)

42 (26.3)

 

Age group (years)

     

 0–15

9 (11.1)

2 (2.5)

27 (33.3)

43 (53.1)

< 0.01

 16–30

14 (10.0)

38 (27.2)

36 (25.7)

52 (37.1)

 

 31–45

7 (8.0)

68 (78.2)

9 (10.3)

3 (3.5)

 

 +45

8 (9.6)

62 (74.7)

7 (8.4)

6 (7.2)

 

Year of Birth

     

 After 1995

19 (10.4)

17 (9.3)

58 (31.7)

89 (48.6)

< 0.01

 Before 1995

19 (9.1)

153 (73.6)

21 (10.1)

15 (7.2)

 

Risk Factor

     

 Piercing

37 (9.9)

169 (45.1)

74 (19.7)

95 (25.3)

0.05

 Tattoo

23 (8.8)

116 (44.6)

55 (21.2)

66 (25.4)

0.52

 Contact/miners

18 (13.2)

61 (44.9)

21 (15.4)

36 (26.5)

0.18

  1. After 1995: individuals born after HBV vaccine implementation and before 1995: individuals born before HBV vaccine implementation. p < 0.05 was considered statically significant