title: Two Anaplasma phagocytophilum strains in Ixodes scapularis ticks, Canada.
abstract: We developed PCR-based assays to distinguish a human pathogenic strain of Anaplasma phagocytophilum, Ap-ha, from Ap-variant 1, a strain not associated with human infection. The assays were validated on A. phagocytophilum-infected black-legged ticks (Ixodes scapularis) collected in Canada. The relative prevalence of these 2 strains in I. scapularis ticks differed among geographic regions.
authors.forename: Chantel N
authors.initials: CN
authors.lastname: Krakowetz
authors.forename: Antonia
authors.initials: A
authors.lastname: Dibernardo
authors.forename: L Robbin
authors.initials: LR
authors.lastname: Lindsay
authors.forename: Neil B
authors.initials: NB
authors.lastname: Chilton
mesh_terms: D041081:Anaplasma phagocytophilum / Q000145:classification* / Q000235:genetics; D000818:Animals; D001179:Arthropod Vectors / Q000382:microbiology*; D002170:Canada; D016873:Ehrlichiosis / Q000382:microbiology / Q000635:transmission; D005260:Female; D006801:Humans; D018884:Ixodes / Q000382:microbiology*; D020641:Polymorphism, Single Nucleotide; D012336:RNA, Ribosomal, 16S
chemical_list: D012336:RNA, Ribosomal, 16S