Spotted-Fever Group Rickettsia in Dermacentor variabilis, Maryland

  title={Spotted-Fever Group Rickettsia in Dermacentor variabilis, Maryland},
  author={Nicole C Ammerman and Katherine I. Swanson and Jennifer M. Anderson and Timothy R. Schwartz and Eric C. Seaberg and Gregory E. Glass and D. E. Norris},
  booktitle={Emerging infectious diseases},
Three-hundred ninety-two adult Dermacentor variabilis were collected from six Maryland counties during the spring, summer, and fall of 2002. Infection prevalence for spotted fever group Rickettsia was 3.8%, as determined by polymerase chain reaction. Single strand conformational polymorphism (SSCP) analysis followed by sequencing indicated that all infections represented a single rickettsial taxon, Rickettsia montanensis. 

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