TABLE 6.

Results of blood culture and serological tests for 17 patients with relapsing brucellosis at the prerelapse and relapse periods

Patient	Reciprocal titera
	First relapse								Second relapse
	Blood culture		SAT		CT		CF		Blood culture		SAT		CT		CF
	Pre	Rel	Pre	Rel	Pre	Rel	Pre	Rel	Pre	Rel	Pre	Rel	Pre	Rel	Pre	Rel
1	−	+	160	160	640	640	32	32	−	+	160	160	640	640	32	32
2	−	−	160	320	640	>1,280	16	32	−	+	160	160	640	>1,280	16	32
3	−	+	80	160	320	640	16	64	−	−	160	160	640	640	16	64
4	−	+	80	80	320	320	32	64	−	−	80	160	320	640	32	64
5	−	−	320	320	>1,280	>1,280	64	256	−	+	160	160	640	>1,280	64	>256
6	−	−	160	160	640	640	64	128	−	−	160	400	>1,280	>1,280	64	>256
7	−	+	160	160	320	1,280	16	128	−	−	160	160	640	640	16	128
8	−	−	400	320	>1,280	>1,280	16	32	−	−	400	320	>1,280	>1,280	16	32
9	−	+	160	160	640	640	32	128	−	+	80	160	320	640	32	128
10	−	−	80	160	160	160	16	64	−	−	80	160	320	640	16	64
11	−	−	160	80	640	1,280	32	128	−	−	160	160	640	640	32	128
12	−	−	80	160	320	320	32	16	−	−	160	160	640	640	32	16
13	−	+	40	80	160	320	32	256	−	+	40	320	160	320	32	256
14	−	−	160	80	640	320	64	128	−	−	160	80	640	320	64	128
15	−	−	160	400	640	>1,280	64	64	−	+	320	160	640	>1,280	64	64
16	−	−	160	320	160	320	64	128	−	+	160	320	160	320	64	128
17	−	+	320	400	>1,280	1,280	32	>256	−	−	160	160	640	640	32	256

^aPre, prerelapse period; Rel, during relapse. The first relapse occurred within 10 to 30 days after the end of treatment; the second relapse occurred within 6 to 8 months after treatment. SAT, Wright's SAT positive ≥1:160; CT, CT positive ≥1:320; CF, CF positive ≥1:16.