Table 1.

Summary of the tested cases for Japanese spotted fever and scrub typhus.

Total	Single-Sample Cases			Paired-Sample Cases
	Tested	IgM ≥ 320 1		Tested	≥4-Fold Increase 2		IgM ≥ 320 1
		JSF	ST		JSF	ST	JSF	ST
1406	785	13	52	621	148	136	6	2

¹ The diagnoses were made by IgM ≥320 in the acute phase sample; ² The diagnoses were made by a ≥4-fold increase of IgM/IgG titer in the paired samples. Abbreviations: JSF, Japanese spotted fever; ST, scrub typhus.