Table 2.
Pathogen infection status of ticks collected by drag-sampling at parks in Howard County, Maryland, 2017
| Site | Total ticks |
Amblyomma americanum
|
Dermacentor spp. |
Ixodes scapularis
|
Pathogen prevalence (%; CI)a |
||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nymphs | Adults (♂/♀) | Adults (♂/♀) | Nymphs | Adults (♂/♀) | NIP (±SE) | D | Borrelia burgdorferi s.l. | Anaplasma phagocytophilum | Ehrlichia chaffeensis | ||
| Blandair | 10 | 1 | - | 1 (1/0)a | 7 | 1 (1/0) | 2 (0.3) | 0.00001 | - | - | - |
| Cedar Lane | 19 | 2 | - | 1 (1/0)v | 9 | 7 (3/4) | 3 (0.3) | 0.00003 | 6/16 (38; 18–62) | - | - |
| Centennial | 19 | 0 | - | 1 (0/1)a | 15 | 3 (2/1) | 3 (1.3) | 0.00003 | 5/18 (28; 13–51) | 1/18 (6; 1–26) | - |
| David Force | 12 | 0 | - | 1 (1/0)a | 10 | 1 (1/0) | 2 (0.3) | 0.00002 | 3/10 (30; 11–61) | 1/11 (9; 2–38) | - |
| MPEA | 26 | 0 | 1 (0/1) | - | 18 | 7 (4/3) | 4 (1.4) | 0.00004 | 2/25 (8; 3–25) | - | - |
| Rockburn | 58 | 15 | 2 (2/0) | - | 34 | 7 (5/2) | 6 (2.3) | 0.00006 | 7/41 (17; 9–31) | 1/58 (2; <1–9) | - |
| Wincopin | 63 | 37 | 7 (4/3) | - | 17 | 2 (1/1) | 4 (0.9) | 0.00003 | - | 1/63 (2; <1–8) | 1/44 (2; <1–12) |
NIP = mean number of nymphs collected per sampling date during May–July; D = nymphal density during May–July per 100 m2.
a
A. americanum were tested for A. phagocytophilum and Ehrlichia spp.; D. albipictus (a) and D. variablilis (v) were tested for Rickettsia spp.; I. scapularis were tested for A. phagocytophilum, Ba. microti, and Bo. Burgdorferi s.l.