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Table 3 Prevalence of active TB and LTBI among contacts

From: Tuberculosis contact-tracing among Syrian refugee populations: lessons from Jordan

 

Contacts of all IC

Contacts of Smear + IC only

All

< 5

5 to 15

> 15

All

< 5

5 to 15

> 15

All contacts (n)

481

76

134

237

210

33

60

87

 Active TB (%)

 (IC 95)

2.1

(1.1-3.9)

5.3

(1.7-13.7)

0

2.5

(1.0-5.7)

3.8

(1.8-7.6)

9.1

(2.4-25.5)

0

5.7

(2.1-13.4)

 PTB prevalence (%)

 (IC 95)

1.6

(0.7-3.3)

3.9

(1.0-11.8)

0

2.1

(0.8-5.1)

2.9

(1.2-6.5)

6.1

(1.1-21.7)

0

4.6

(1.5-12.0)

 EPTB prevalence (%)

 (IC 95)

0.4

(0.1-1.6)

1.3

(0.1-81)

0

0.4

(0.0-2.7)

1.0

(0.2-3.8)

3.0

(0.2-17.5)

0

1.1

(0.1-7.1)

Contacts with TST result available (n)

228

61

90

59

120

28

44

34

 LTBI prevalence (%)

 (IC 95)

24.1

(18.8-30.3)

26.2

(16.1-39.3)

21.1

(13.5-31.2)

27.1

(16.7-40.5)

37.5

(29.0-46.8)

39.3

(22.1-59.3)

40.9

(26.7-56.7)

35.3

(20.3-53.5)