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Table 2 The frequency distribution of semi quantitative slide agglutination titration test of Widal test in febrile patients suspected of typhoid fever in St. Paul’s hospital

From: A comparative study of Widal test with blood culture in the diagnosis of typhoid fever in febrile patients

Titer

O antigen

H antigen

Frequency

% (n = 160)

% from total (n = 270)

Frequency

% (n = 127)

% from total (n = 270)

No agglutination

40

25.0

14.8

37

29.1

13.7

1:20

32

20.0

11.9

33

26.0

12.2

1:40

15

9.4

5.6

5

3.9

1.9

1:80

42

26.3

15.6

14

11.0

5.2

1:160

21

13.0

7.8

26

20.5

9.6

1:320

6

3.8

2.2

12

9.4

4.4

1:640

4

2.5

1.5

0

0

0

Total

160

100

59.3

127

100

47.0