Volume 13, Number 4—April 2007
Research
Flinders Island Spotted Fever Rickettsioses Caused by “marmionii” Strain of Rickettsia honei, Eastern Australia
Nathan B. Unsworth*, John Stenos*
, Stephen R. Graves*, Antony G. Faa†, G. Erika Cox‡, John R. Dyer§, Craig S. Boutlis¶, Amanda M. Lane#, Matthew D. Shaw#, Jennifer Robson**, and Michael D. Nissen††
, Stephen R. Graves*, Antony G. Faa†, G. Erika Cox‡, John R. Dyer§, Craig S. Boutlis¶, Amanda M. Lane#, Matthew D. Shaw#, Jennifer Robson**, and Michael D. Nissen††Table 1
Rickettsial serology, PCR, and culture results from 7 cases of FISF*
| 1st serum sample | 2nd serum sample | Microbial detection of FISF agent by | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Case |
Location |
Day after disease onset |
SFG titer |
TG titer |
Day after disease onset |
SFG titer |
TG titer |
Seropositivity |
Seroconversion |
PCR |
Culture |
| 1 | Port Wilunga; SA | 14 | 128 | <128 | 190 | 256 | <128 | + | – | + | + |
| 2 | Darnley Is; QLD | 8 | 256 | <128 | 186 | 512 | <128 | + | – | + | + |
| 3 | Darnley Is; QLD | 3 | <128 | <128 | 179 | <128 | <128 | – | – | + | + |
| 4 | Yam Is; QLD | 5 | <128 | <128 | 515 | <128 | <128 | – | – | + | + |
| 5 | Innisfail; QLD | 7 | <128 | <128 | 17 | 4,096 | 2,048 | + | + | + | + |
| 6 | Launceston, TAS | 34 | 256 | 128 | 60 | 256 | 128 | + | – | +† | – |
| 7 | Iron Range; QLD | 5 | <128 | <128 | 18 | 1,024 | <128 | + | + | +‡ | ND |
*FISF, Flinders Island spotted fever; SFG, spotted fever group; TG, typhus group; SA, Is, island; South Australia; QLD, Queensland, TAS, Tasmania; ND: Not done.
†PCR positive at both 34 and 60 d after disease onset.
‡Performed on serum and real-time PCR positive only.
