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Table 1 Cumulative positivity of HPV infections among 380 women up to 3 follow-up visits between March 2003 and December 2006 in Kampala, Uganda

From: Type-specific incidence, clearance and predictors of cervical human papillomavirus infections (HPV) among young women: a prospective study in Uganda

 

Prevalence at entry (%)

Cumulative positivity (%)

Positive once (%)

Positive ≥ 2 visits (%)

Infections with high-risk HPV types

16

42 (11.1)

58 (15.3)

49 (12.9)

9 (2.4)

18

47 (12.4)

56 (14.7)

50 (13.2)

6 (1.6)

31

24 (6.3)

43 (11.3)

36 (9.5)

7 (1.8)

33

41 (10.8)

52 (13.7)

46 (12.1)

6 (1.6)

35

22 (5.8)

40 (10.5)

33 (8.7)

7 (1.8)

39

18 (4.7)

26 (6.8)

21 (5.5)

5 (1.3)

45

11 (2.9)

20 (5.3)

16 (4.2)

4 (1.1)

51

54 (14.2)

76 (20.0)

59 (15.5)

17 (4.5)

52

49 (12.9)

71 (18.7)

52 (14.2)

17 (4.5)

56

32 (8.4)

54 (14.2)

47 12.4)

7 (1.8)

58

8 (2.1)

22 (5.8)

19 (5.0)

3 (0.8)

59

8 (2.1)

15 (3.9)

12 (3.2)

3 (0.8)

68-73

20 (5.3)

35 (9.2)

30 (7.9)

5 (1.3)

39-68-73

8 (2.1)

11 (2.9)

11 (2.9)

0 (0.0)

Infections with low-risk HPV types

6

74 (19.5)

94 (24.7)

82 (21.6)

12 (3.2)

11

55 (14.5)

62 (16.3)

59 (15.5)

3 (0.8)

34

0 (0.0)

0 (0.0)

0 (0.0)

0 (0.0)

40

17 (4.5)

20 (5.3)

17 (4.5)

3 (0.8)

42

2 (0.5)

2 (0.5)

2 (0.5)

0 (0.0)

43

19 (5.0)

22 (5.8)

19 (5.0)

3 (0.8)

44

6 (1.6)

14 (3.7)

8 (2.1)

6 (1.6)

53

12 (3.2)

17 (4.5)

15 (3.9)

2 (0.5)

54

9 (2.4)

21 (5.5)

15 (3.9)

6 (1.6)

66

20 (5.3)

35 (9.2)

27 (7.1)

8 (2.1)

70

11 (2.9)

18 (4.7)

13 (3.4)

5 (1.3)

74

2 (0.5)

7 (1.8)

4 (1.1)

3 (0.8)

HPV Xa

26 (6.8)

75 (19.7)

66 (17.4)

9 (2.4)

HPV other X b

8 (2.1)

42 (11.1)

38 (10.0)

4 (1.1)

Number of women with:

- Any HPV types

286 (75.3)

329 (86.6)

122 (32.1)

207 (54.5)

- High-risk HPV types

197 (51.8)

259 (68.2)

139 (36.6)

120 (31.6)

- Low-risk HPV types

167 (43.9)

209 (55.0)

144 (37.9)

65 (17.1)

- Single infections

102 (26.8)

210 (55.3)

142 (37.4)

68 (17.9)

- Multiple infections

152 (40.0)

181 (47.6)

124 (32.6)

57 (15.0)

-HPV 16--related c

127 (33.4)

178 (46.8)

113 (29.7)

65 (17.1)

-HPV 18--related d

77 (20.3)

107 (28.6)

82 (21.6)

25 (6.6)

  1. a HPV X includes types 26, 30, 55, 61, 62, 64, 67, 69, 71, 82, 83, 84, 87, 89, 90 and other unknown types
  2. bHPV-other X, i.e. type unknown
  3. c Includes HPV 16, 31, 33, 35, 52 and 58;
  4. d Includes HPV 18, 39, 45, 59, 68