title: Afebrile spotted fever group Rickettsia infection after a bite from a Dermacentor variabilis tick infected with Rickettsia montanensis.
abstract: Several spotted fever group rickettsiae (SFGR) previously believed to be nonpathogenic are speculated to contribute to infections commonly misdiagnosed as Rocky Mountain spotted fever (RMSF) in the United States, but confirmation is difficult in cases with mild or absent systemic symptoms. We report an afebrile rash illness occurring in a patient 4 days after being bitten by a Rickettsia montanensis-positive Dermacentor variabilis tick. The patient's serological profile was consistent with confirmed SFGR infection.
authors.affiliation: Centers for Disease Control and Prevention , Atlanta, GA 30333, USA. fzh7@cdc.gov
authors.forename: Jennifer H
authors.initials: JH
authors.lastname: McQuiston
authors.forename: Galina
authors.initials: G
authors.lastname: Zemtsova
authors.forename: Jamie
authors.initials: J
authors.lastname: Perniciaro
authors.forename: Mark
authors.initials: M
authors.lastname: Hutson
authors.forename: Joseph
authors.initials: J
authors.lastname: Singleton
authors.forename: William L
authors.initials: WL
authors.lastname: Nicholson
authors.forename: Michael L
authors.initials: ML
authors.lastname: Levin
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D000907:Antibodies, Bacterial / Q000097:blood; D001096:Arachnid Vectors / Q000382:microbiology*; D002648:Child; D004269:DNA, Bacterial / Q000097:blood / Q000737:chemistry / Q000235:genetics; D003870:Dermacentor / Q000382:microbiology*; D004318:Doxycycline / Q000627:therapeutic use; D005076:Exanthema; D005260:Female; D005334:Fever; D005845:Georgia; D006801:Humans; D016133:Polymerase Chain Reaction; D012281:Rickettsia / Q000235:genetics / Q000276:immunology / Q000302:isolation & purification*; D012282:Rickettsia Infections / Q000188:drug therapy / Q000382:microbiology* / Q000635:transmission; D012373:Rocky Mountain Spotted Fever / Q000188:drug therapy / Q000382:microbiology / Q000635:transmission; D017422:Sequence Analysis, DNA; D012698:Serologic Tests; D064927:Tick Bites
chemical_list: D000900:Anti-Bacterial Agents; D000907:Antibodies, Bacterial; D004269:DNA, Bacterial; D004318:Doxycycline