title: Ehrlichia chaffeensis in Missouri ticks.
abstract: A nested polymerase chain reaction specific for Ehrlichia chaffeensis was used to attempt to amplify DNA from extracts of 100 individual ticks collected from 13 counties in central Missouri. Seventeen of 59 Amblyomma americanum and six of 41 Dermacentor variabilis ticks exhibited the characteristic 389-basepair product. This supports the hypothesis that these tick species may be vectors of human monocytic ehrlichiosis.
authors.affiliation: Department of Internal Medicine, University of Missouri-Columbia 65212, USA.
authors.forename: W E
authors.initials: WE
authors.lastname: Roland
authors.forename: E D
authors.initials: ED
authors.lastname: Everett
authors.forename: T L
authors.initials: TL
authors.lastname: Cyr
authors.forename: S Z
authors.initials: SZ
authors.lastname: Hasan
authors.forename: C B
authors.initials: CB
authors.lastname: Dommaraju
authors.forename: G A
authors.initials: GA
authors.lastname: McDonald
mesh_terms: D000818:Animals; D004269:DNA, Bacterial / Q000032:analysis; D018469:Ehrlichia chaffeensis / Q000302:isolation & purification*; D007303:Insect Vectors / Q000382:microbiology*; D016133:Polymerase Chain Reaction; D013987:Ticks / Q000382:microbiology*
chemical_list: D004269:DNA, Bacterial