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Volume 17, Number 12—December 2011

Dispatch

Rickettsia parkeri in Amblyomma maculatum Ticks, North Carolina, USA, 2009–2010

Andrea S. Varela-StokesComments to Author , Christopher D. Paddock, Barry Engber, and Marcee Toliver
Author affiliations: Mississippi State University, Starkville, Mississippi, USA (A.S. Varela-Stokes); Centers for Disease Control and Prevention, Atlanta, Georgia, USA (C.D. Paddock); North Carolina Department of Environment and Natural Resources, Raleigh, North Carolina, USA (B. Engber, M. Toliver)

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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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