Risky Behavior (Yes-No)

Index cases

(n = 125)

Positive Household Contacts/ All Household Contacts.

Z-test (Sig.)

n/N

%

Helped Index case during an attack of haematemesis or a bleeding wound

2.2 (P < 0.05)

(Yes)

29

22/110

20

NO

96

22/211

10.4

Helped primary case during other bleeding episodes

(Yes)

10

8/55

14.55

−0.02 (P > 0.05)

NO

115

36/266

13.53

Precautions taken against transmission

(No)

96

42/303

13.8

−0.02 (P > 0.05)

YES

29

2/18

11.1

Have been soiled with blood during help of primary case

(Yes)

6

4/23

17.39

0.22 (P > 0.05)

NO

119

40/298

13.42

Change of soiled clothes and hand hygiene

(No)

122

42/302

13.9

0.07 (P > 0.05)

YES

3

2/19

10.53

Give index case Intravenous Injection

(Yes)

8

7/25

28

1.86 (P < 0.05)

NO

117

37/296

12.5

Accompanied index patient during hospital-stay

(Yes)

9

6/25

24

1.26, P > 0.05

NO

116

38/296

12.81

Use of thee same shaving razors and scissors as index case

(Yes)

50

14/67

20.9

1.72, P > 0.05

NO

75

30/254

11.8

Use o the f same tooth brushes as primary case

(Yes)

10

2/17

11.7

−0.12, P > 0.05

NO

115

42/304

13.82

Visit same dentists as primary case

(Yes)

50

18/76

23.68

2.70, P < 0.01

NO

75

26/245

10.61