Volume 17, Number 12—December 2011
Dispatch
Rickettsia parkeri in Amblyomma maculatum Ticks, North Carolina, USA, 2009–2010
Andrea S. Varela-Stokes
, Christopher D. Paddock, Barry Engber, and Marcee Toliver
, Christopher D. Paddock, Barry Engber, and Marcee Toliver
Table
Rickettsia species detected by PCR in adult Amblyomma maculatum ticks collected in North Carolina, USA, 2009−2010
| Year, county | No. adult ticks tested (no. found on person or domestic animal) | % Positive |
|
|---|---|---|---|
| R. parkeri | Candidatus Rickettsia andeanae | ||
| 2009 | 70 | 14 (20) | 1 (1) |
| Anson | 4 (0) | 0 | 0 |
| Brunswick | 1 (0) | 0 | 0 |
| Carteret | 3 (67) | 0 | 0 |
| Chatham | 3 (0) | 0 | 0 |
| Chowan | 1 (0) | 0 | 0 |
| Columbus | 1 (0) | 1 | 0 |
| Craven | 2 (50) | 1* (50) | 0 |
| Cumberland | 1 (0) | 0 | 0 |
| Duplin | 4 (25) | 2 (50) | 0 |
| Forsyth | 1 (100) | 0 | 0 |
| Halifax | 1 (0) | 1 (100) | 0 |
| Hoke | 3 (0) | 1 (33) | 0 |
| Johnston | 1 (0) | 0 | 0 |
| Jones | 3 (67) | 1 (33) | 0 |
| Lenoir | 9 (100) | 1 (11) | 0 |
| Martin | 6 (100) | 2 (33) | 1* (17) |
| Mecklenburg | 1 (0) | 0 | 0 |
| Onslow | 3 (33†) | 1† (33) | 0 |
| Pender | 1 (0) | 0 | 0 |
| Perquimans | 4 (100) | 1* (25) | 0 |
| Richmond | 1 (100) | 0 | 0 |
| Robeson | 1 (0) | 0 | 0 |
| Wake | 15 (47) | 2‡ (13) | 0 |
| 2010 | 164 | 54 (33) | 8 (5) |
| Martin | 57 (46) | 22§ (39) | 3 (5) |
| Mecklenburg | 70 (3) | 13*¶ (17) | 5 (7) |
| Wake | 37 (3) | 19 (51) | 0 |
*One specimen on person.
†Specimen was found on vehicle.
‡Specimens were removed from domestic animals.
§Nine specimens were removed from individual persons.
¶Thirteen specimens were processed for culture isolation; 3 isolates obtained.
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