title: Detection and identification of bacterial agents in Ixodes persulcatus Schulze ticks from the north western region of Russia.
abstract: Ixodes persulcatus Schultze ticks are traditionally associated with transmission of Lyme disease, babesiosis, and tick-borne encephalitis. Here we compared the prevalence of infection with Borrelia burgdorferi, and rickettsial and ehrlichial agents in I. persulcatus ticks collected in different locations of the North Western administrative region of Russia. Altogether, 27.7% of ticks were infected with at least one organism, while the DNA of two or more bacteria was found in 11.8% of ticks tested. The highest average prevalence of Anaplasmataceae (20.8%) was detected in ticks from Arkhangel'sk province, while the prevalence in ticks from Novgorod province and St. Petersburg, respectively, was 7.3% and 12.2%. Only Ehrlichia muris DNA was identified by DNA sequencing. In comparison, the prevalence of B. burdorferi DNA was 16.6%, 5.8%, and 24.5% in the respective locations. The 382-bp amplicon of gltA from Candidatus Rickettsia tarasevichiae was detected in 2.75% and 1.6%, respectively, of ticks from Arkhangel'sk and Novgorod provinces, extending further west and north the area where this rickettsia is known to be present. DNA of the rickettsia-like endosymbiont Montezuma was primarily associated with female ticks, 8-28% of which were infected. Since I. persulcatus is so commonly infected with multiple agents that may cause human diseases, exposure to these ticks poses significant risk to human health in this region.
authors.affiliation: Rickettsial Zoonoses Branch, Division of Viral and Rickettsial Diseases, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA. MEremeeva@cdc.gov
authors.forename: Marina E
authors.initials: ME
authors.lastname: Eremeeva
authors.forename: Alice
authors.initials: A
authors.lastname: Oliveira
authors.forename: John
authors.initials: J
authors.lastname: Moriarity
authors.forename: Jennilee B
authors.initials: JB
authors.lastname: Robinson
authors.forename: Nikolay K
authors.initials: NK
authors.lastname: Tokarevich
authors.forename: Ludmila P
authors.initials: LP
authors.lastname: Antyukova
authors.forename: Valentina A
authors.initials: VA
authors.lastname: Pyanyh
authors.forename: Olga N
authors.initials: ON
authors.lastname: Emeljanova
authors.forename: Valentina N
authors.initials: VN
authors.lastname: Ignatjeva
authors.forename: Roman
authors.initials: R
authors.lastname: Buzinov
authors.forename: Valentina
authors.initials: V
authors.lastname: Pyankova
authors.forename: Gregory A
authors.initials: GA
authors.lastname: Dasch
mesh_terms: D000710:Anaplasmataceae / Q000235:genetics / Q000302:isolation & purification; D000818:Animals; D001179:Arthropod Vectors / Q000382:microbiology*; D001419:Bacteria / Q000235:genetics / Q000302:isolation & purification*; D052160:Benzothiazoles; D001898:Borrelia / Q000235:genetics / Q000302:isolation & purification; D003959:Diamines; D004536:Ehrlichia / Q000235:genetics / Q000302:isolation & purification; D005260:Female; D018884:Ixodes / Q000382:microbiology*; D008297:Male; D008969:Molecular Sequence Data; D009930:Organic Chemicals / Q000032:analysis; D016133:Polymerase Chain Reaction; D015995:Prevalence; D011804:Quinolines; D012281:Rickettsia / Q000235:genetics / Q000302:isolation & purification; D012426:Russia
chemical_list: D052160:Benzothiazoles; D003959:Diamines; D009930:Organic Chemicals; D011804:Quinolines; C098022:SYBR Green I