Patients infected with rickettsia produce antibodies that agglutinate proteus antigens. Agglutination patterns can be interpreted as follows:
|
Infection |
OX-19 |
OX-2 |
OX-K |
|
Epidemic typhus |
+ |
- |
- |
|
Murine typhus |
+ |
- |
- |
|
Spotted fever group |
+ |
- |
- |
|
Spotted fever group |
- |
+ |
- |
|
Scrub typhus |
- |
- |
+ |
|
Q fever |
- |
- |
- |
Specimen requirement is one SST tube of blood.
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