Table 1.
Results of Rickettsia spp. testing by burn treatment (burned surrounded by burned [BB], burned surrounded by unburned [BUB], unburned surrounded by burned [UBB], and unburned surrounded by unburned [UBUB]).
| Tick species | Treatment | Total* | Adult | Nymph** | Larvae** | Organisms DetectedƗ |
|---|---|---|---|---|---|---|
| A. americanum | BB | 1/1 (100) | 1/1 (100) | — | — | 1 R. amblyommatis |
| BUB | 19/219 (8.7) | 9/15 (60.0) | 4/21 (19.0) | 6/183 (3.3) | 16 R. amblyommatis | |
| UBB | 16/350 (4.6) | 8/13 (61.5) | 2/16 (12.5) | 6/321 (1.9) | 13 R. amblyommatis | |
| UBUB | 589/4037 (14.6) | 280/441 (63.5) | 212/1152 (18.4) | 97/2444 (4.0) | 412 R. amblyommatis | |
| 1 Rickettsia sp. (95%, 98%, DQ092218) | ||||||
| A. maculatum | BB | 7/37 (18.9) | 7/36 (19.4) | 0/1 (0) | — | 1 R. amblyommatis |
| 1 R. parkeri | ||||||
| BUB | 4/30 (13.3) | 4/29 (13.8) | 0/1 (0) | — | ||
| UBB | 2/6 (33.3) | 2/5 (40.0) | 0/1 (0) | — | ||
| UBUB | 1/3 (33.3) | 1/3 (33.3) | — | — | 1 R. amblyommatis | |
| I. scapularis | BB | 0/2 (0) | 0/2 (2) | — | — | |
| BUB | 9/37 (24.3) | 9/17 (52.9) | — | 0/20 (0) | 1 R. cooleyi | |
| 6 Rickettsia sp. TR-39 | ||||||
| UBB | 42/100 (42.0) | 42/99 (42.4) | 0/1 (0) | — | 1 R. amblyommatis | |
| 3 R. monacensis | ||||||
| 17 Rickettsia sp. TR-39 | ||||||
| 2 Rickettsia sp. (96–98%, KC003474) | ||||||
| 1 Rickettsia sp. (99%, JN190456) | ||||||
| UBUB | 68/132 (51.5) | 67/128 (52.3) | 1/4 (25.0) | — | 2 R. cooleyi | |
| 1 R. monacensis | ||||||
| 24 Rickettsia sp. TR-39 | ||||||
| 4 Rickettsia sp. TX140 (99–100%, EF689739) | ||||||
| 1 Rickettsia sp. (84%, KC003474) | ||||||
| 1 Rickettsia sp. (97%, EU283838) | ||||||
| D. variabilis | BB | — | — | — | — | |
| BUB | 2/8 (25.0) | 2/8 (25.0) | — | — | 1 Rickettsia sp. TR-39 | |
| 1 R. amblyommatis (79%, GQ302891) | ||||||
| UBB | 1/9 (11.1) | 1/9 (11.1) | — | — | 1 R. rhipicephali | |
| 1 R. amblyommatis | ||||||
| UBUB | 7/18 (38.9) | 7/18 (38.9) |
*Number of infected ticks (or pools when applicable) over total ticks tested (percent positive).
**For nymphs and larvae, indicates minimum infection prevalence.
ƗFor 2010 & 2011, some positive samples were unsequenceable or were not sent for sequencing. For 2011 only, all samples that were sequenced had a minimum of 95% identity unless otherwise noted.