Volume 12, Number 9—September 2006
Letter
Murine Typhus from Vietnam, Imported into Japan
Momoyo Azuma*, Yasuhiko Nishioka*, Motohiko Ogawa†, Tomohiko Takasaki†, Saburo Sone*, and Tsuneo Uchiyama*
Table
IFA titers of the patient sera and the cross-absorption test*
| Day of illness | Immunoglobulin class | Antigen for absorption | Antigen for IFA titration |
|||
|---|---|---|---|---|---|---|
| TG rickettsiae |
SFG rickettsiae |
|||||
| R. typhi† | R. prowazekii‡ | R. japonica§ | R. conorii¶ | |||
| 10 |
IgG | (–) | 320 | 320 | <20 | 20 |
| IgM |
(–) |
160 |
40 |
20 |
20 |
|
| 14 |
IgG | (–) | 1,280 | 640 | <20 | 40 |
| R. typhi | <20 | <20 | <20 | <20 | ||
| R. prowazekii | 160 | 0 | <20 | <20 | ||
| (–) | 640 | 320 | 80 | 80 | ||
| IgM |
R. typhi | <20 | <20 | <20 | <20 | |
| R. prowazekii |
160 |
<20 |
<20 |
<20 |
||
| 24 | IgG | (–) | 640 | 640 | <20 | 40 |
| IgM | (–) | 640 | 320 | 80 | 80 | |
*IFA, indirect immunofluorescence assay; IgG, immunoglobulin G; TG, typhus group; SFG, spotted fever group.
†Strain Wilmington.
‡Strain Breinl.
§Strain YH.
¶Strain Malish 7.
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