Volume 13, Number 11—November 2007
Dispatch
Severe Spotted Fever Group Rickettsiosis, Australia
William J.H. McBride*
, Joshua P. Hanson†, Robert Miller‡, and Drew Wenck§
, Joshua P. Hanson†, Robert Miller‡, and Drew Wenck§Table
Laboratory test results in 3 severe cases of infection with Rickettsia australis, Australia
| Test | Case 1 | Case 2 | Case 3 | Reference range |
|---|---|---|---|---|
| Hemoglobin, g/L | 124 | 130 | 142 | 115–160 |
| Neutrophil count, cells/L | 6.19 | 11.4 | 8.8 | 2.00–8.00 × 109 |
| Lymphocyte count, cells/L | 0.39 | 0.4 | 1.58 | 1.00–4.00 × 109 |
| Platelet count, cells/L | 63 | 30 | 167 | 140–400 × 109 |
| Sodium, mmol/L | 131 | 135 | 139 | 135–145 |
| Urea, mmol/L | 9.8 | 27.8 | 5.0 | 3.0–8.0 |
| Creatinine, μmol/L | 190 | 430 | 100 | 70–120 |
| Bilirubin, μmol/L | 28 | 105 | 41 | <20 |
| Alkaline phosphatase, U/L | 295 | 250 | 587 | 30–120 |
| Gamma-glutamyl transferase, U/L | 205 | 121 | 877 | <50 |
| Alanine aminotransferase, U/L | 131 | 47 | 404 | <40 |
| Aspartate aminotransferase, U/L | 178 | 152 | 417 | <35 |
| Leptospirosis immunoglobulin M | Negative | Negative | Negative | |
| Duration of symptoms before doxycycline treatment, d | 17 | 14 | 10 | |
| R. australis antibody titer* | Negative to 2,048 over 9 d | 64–1,024 over 8 d | Negative to >1,024 over 9 d | Negative <64 Positive >64 |
*By immunofluorescence.
