Table 2. Number of positive bacterial DNA sequences identified for each human-parasitizing tick species, Texas, USA, October 1, 2008–September 30, 2014*.
| Tick |
No. positive |
||||||||
|
Borrelia
|
Ehrlichia
chaffeensis |
Rickettsia
|
|||||||
| UNID |
burgdorferi
|
lonestari
|
amblyommii† |
parkeri
|
peacockii
|
rhipicephali
|
buchneri
|
||
| Amblyomma americanum | 0 | 0 | 8 | 2 | 179 | 0 | 0 | 0 | 0 |
| A. cajennense | 0 | 0 | 0 | 0 | 10 | 0 | 0 | 0 | 0 |
| A. maculatum | 2 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 0 |
| Dermacentor variabilis | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 |
| D. andersoni | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 |
| Ixodes scapularis | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 44 |
|
Rhipicephalus sanguineus
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Total |
3 |
1 |
8 |
2 |
189 |
5 |
2 |
4 |
44 |
| *Only tick species originating in Texas that tested positive for Borrelia, Ehrlichia, or Rickettsia spp. by DNA sequence analysis are shown. Additionally, 2 A. maculatum ticks from Texas were positive for Panola Mountain Ehrlichia. UNID, unidentified species. †Candidatus species. | |||||||||