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Table 1 Admission IFA-IgG titres confirming SFG and ST in relation to duration of illness

From: Clinically helpful rickettsial disease diagnostic IgG titers in relation to duration of illness in an endemic setting in Sri Lanka

Disease

Total

Duration of illness when serum was obtained ≤ 7 days

  

≤1/128

Sero-converted

Responded

≥1/256

Sero-converted (High initial titres)

Responded

SFG

34

25

3

3

9

7 (2)

All (9)

ST

22

14

2

2

8

5 (3)

All (8)

Disease

Total

Duration of illness when serum was obtained > 7 days

  

≤1/128

Sero-converted

Responded

≥1/256

Sero-converted (High initial titres)

Responded

SFG

112

59

3

3

53

21 (26)

47

ST

93

51

1

1

42

16 (26)

All (42)