Table 5.

Scrub typhus and murine typhus IFA results for IgM and IgG antibody titers for 50 patient samples (admission and convalescent sera) stored at ∼4°C and tested on days 2 and 14 compared with day 0 results showing the change in diagnostic status

Combined admission and convalescent	N = 100	Murine typhus (N = 50)		Scrub typhus (N = 50)
		IgM	IgG	IgM	IgG
Day 2	Percent change to positive	7 (14)	1 (2)	6 (12)	4 (8)
Day 2	Percent change to negative	16 (32)	10 (20)	10 (20)	15 (30)
Day 14	Percent change to positive	1 (2)	2 (4)	3 (6)	1 (2)
Day 14	Percent change to negative	18 (36)	18 (36)	18 (36)	25 (50)