TABLE 1.

Reciprocal IFA titers of patient sera

PatientBartonella species isolatedSource of B. quintana isolateReciprocal IFA titera
B. quintanaB. henselae
1 B. quintana Skin1,024256
2 B. quintana Skin512256
3 B. quintana Blood1,024512
4 B. quintana Skin>1,024128
5 B. quintana Skin1,02431
6 B. quintana Skin>1,024512
7 B. quintana Skin>1,024>1,024
8 B. quintana Abdominal mass1,024256
9 B. quintana Skin1,024256
10 B. quintana Skin1,024512
11 B. quintana Skin>1,024>1,024
12 B. quintana Skin25664
13 B. quintana Blood>8,1922,048
14 B. quintana Lymph node512128
15 B. quintana Blood512128
16 B. quintana Blood2,0482,048
17 B. quintana Skin>8,1928,192
18 B. quintana Blood51264
19 B. quintana Blood512128
20 B. quintana Skin2,048128
21 B. quintana Blood1,024128
22bNoneNAc3131
23bNoneNA3131
  • a A reciprocal IFA titer of ≥64 indicates a positive IFA test (10, 40).

  • b Control patients 22 and 23 were both culture negative and seronegative.

  • c NA, not applicable.