Table 3. Results of rickettsia serology tests for patients in the present study.

Rickettsia serology tests	Results
	Case 1	Case 2	Case 3	Case 4	Case 5	Case 6
Admission Weil-Felix test
OX-19	< 1:20	Not done	Not done	< 1:20	< 1:20	< 1:20
OX-2	< 1:20	Not done	Not done	< 1:20	< 1:20	< 1:20
OX-K	< 1:20	Not done	Not done	< 1:20	< 1:20	< 1:20
Repeated Weil-Felix test
OX-19	Not done	Not done	Not done	1:640	< 1:20	1:160
OX-2	Not done	Not done	Not done	< 1:20	< 1:20	< 1:20
OX-K	Not done	Not done	Not done	< 1:20	< 1:20	< 1:20
Specific rickettsia serology test
Orientia tsutsugamushi IgM	Not done	Not done	Not done	Negative	Positive	Negative