Table 2.

Pathogen Identification for the 175 Patients of 216 With Laboratory Diagnoses, Recruited to a Murine Typhus Clinical Trial

Pathogen	Patients, No.
	Total	Culture	PCR	Serology
Rickettsia typhi	158a,b	NA	53a	155b
Orientia tsutsugamushi	7	NA	6	4
Salmonella enterica Typhic	5	5	NA	NA
Leptospira spp.	4	NA	4a	NA
Escherichia coli c	1	1	NA	NA
Salmonella enterica Paratyphi Ac	1	1	NA	NA

Abbreviations: NA, not applicable; PCR, polymerase chain reaction.

^aOne patient was PCR positive for both R. typhi and Leptospira sp.

^bA total of 160 patients had serologic evidence of R. typhi infection, but 5 had PCR/culture evidence of another pathogen (E. coli, Salmonella Typhi, and Leptospira sp. in 1 each and O. tsutsugamushi in 2). They may have had concurrent dual infections, but we have opted to be conservative and not included these 5 patients, giving a denominator of 155 patients.

^cBlood culture and bacterial identification as described by Phetsouvanh et al [21].