TABLE 3.

IFA titers of patient and control antisera against EC-01 antigen and antigens from B. bacilliformis isolated in Peru^a

Antiserumb	Antibody titer to indicated antigen
	EC-01	Ramirez	Colonia	Cule III
Cus 807	<32	>2,056	<32	512
Cus 1002	<32	512	<32	512
Cus 1003	<32	>2,056	<32	>2,056
Cus 1006	<32	256	64	256
Cus 1007	64	>2,056	32	512
Cus 1008	128	256	128	1,028
Cus 1011	<32	<32	32	>2,056
Cus 1202	32	64	64	1,028
Cus 1203	32	>2,056	32	>2,056
Cus 3405	32	>2,056	64	256
Cus 3601	64	1,028	64	>2,056
Cus 3602	64	512	128	512
Cus 3802	64	>2,056	128	64
Cus 3803	<32	32	64	256
Cus 4003	<32	256	<32	>2,056
Elizabeth	32	256	64	128
Garcia	64	128	64	>2,056
Vega	128	1,028	64	>2,056
Ramirez	64	64	32	1,028
Colonia	32	512	32	512
EC-01	64	1,028	256	<32
B. henselae (+)	<32	1,028	<32	<32
Pooled human sera (−)	<32	<32	<32	<32

^aAntisera was collected in Peru from 2001 to 2002 from patients with Oroya fever and were provided by Franca Jones, U.S. Naval Medical Research Center Detachment in Lima, Peru.

^b+, positive IFA control; −, negative IFA control.