Table 2.
Results of Ehrlichia 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]).
| Pathogen | A. maculatum | A. americanum | D. variabilis | Total** | ||||
|---|---|---|---|---|---|---|---|---|
| adult | nymph** | adult | nymph** | larvae** | adult | |||
| E. chaffeensis | BB | 0/30 (0)* | 0/1 (0) | 0/1 (0) | — | — | — | 0/32 (0) |
| BUB | 0/24 (0) | — | 0/15 (0) | 0/21 (0) | 0/83 (0) | 0/6 (0) | 0/150 (0) | |
| UBB | 0/3 (0) | — | 0/13 (0) | 0/16 (0) | 0/201 (0) | 0/7 (0) | 0/240 (0) | |
| UBUB | — | — | 3/441 (0.7) | 2/1152 (0.2) | 0/1116 (0) | 0/13 (0) | 5/2724 (0.2) | |
| Total | 0/57 (0) | 0/1 (0) | 3/470 (0.6) | 2/1189 (0.2) | 0/1400 (0) | 0/26 (0) | 5/3146 (0.2) | |
| E. ewingii | BB | 0/30 (0) | 0/1 (0) | 0/1 (0) | — | — | — | 0/32 (0) |
| BUB | 0/24 (0) | — | 0/15 (0) | 0/21 (0) | 0/83 (0) | 1/6 (16.7) | 1/150 (0.7) | |
| UBB | 0/3 (0) | — | 0/13 (0) | 0/16 (0) | 0/201 (0) | 0/7 (0) | 0/240 (0) | |
| UBUB | — | — | 21/441 (4.8) | 0/1152 (0) | 0/1116 (0) | 0/13 (0) | 21/2724 (0.8) | |
| Total | 0/57 (0) | 0/1 (0) | 21/470 (4.5) | 0/1189 (0) | 0/1400 (0) | 1/26 (3.8) | 22/3146 (0.7) | |
| Panola Mountain Ehrlichia | BB | 0/30 (0) | 0/1 (0) | — | — | — | 0 | 0/32 (0) |
| BUB | 0/24 (0) | — | 0/10 (0) | 0/4 (0) | 0/83 (0) | 0/6 (0) | 0/150 (0) | |
| UBB | 0/3 (0) | — | 0/9 (0) | 0/12 (0) | 0/201 (0) | 0/7 (0) | 0/240 (0) | |
| UBUB | — | — | 3/274 (1.1) | 3/1070 (0.3) | 0/1116 (0) | 1/13 (7.7) | 7/2724 (0.2) | |
| Total | 0/57 (0) | 0/1 (0) | 3/293 (1.0) | 3/1086 (0.3) | 0/1400 (0) | 1/26 (3.8) | 7/3146 (0.2) | |
*Number of infected ticks (or pools when applicable) over total ticks tested (percent positive).
**Minimum infection prevalence.