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. 2001 Mar;8(2):409–414. doi: 10.1128/CDLI.8.2.409-414.2001

TABLE 2.

Scrub typhus antibodies detected earlier with RFA than with IFAa

Patient Days after onset of illness IFA titers of:
RFA detection of:
IgM IgG IgM IgG
MAK134 (7/6/76) 1
8 + +
15 320 80 + +
21 640 160 + +
32 80 320 +
MAK251 (7/17/77) 6 + +
11 640 320 + +
20 320 160 + +
26 320 80 + +
27 1,280 160 + +
60 1,280 + +
MAK116 (6/5/76) 3
10 80 + +
17 320 160 + +
23 640 320 + +
31 160 320 + +
64 1,280 + +
MAK153 (7/22/76) 3
10
17 320 + +
24 640 + +
30 640 + +
46 640 + +
MAK213 (6/24/77) 5 +
12 320 80 + +
36 160 160 + +
56 320 + +
a

Date of onset is listed in parentheses as month/day/year. IFA negative (−), titer of <40; RFA negative (−), no visible lines.