The prevalence of Borrelia burgdorferi sensu lato in Ixodes persulcatus  and  I. ricinus  ticks in the zone of  their sympatry

Éi, Korenberg; Kovalevskii, Yurii V.; Levin, Michael; Shchyogoleva, Tatyana V.

doi:10.14411/fp.2001.009

Cited by 18 publications

(17 citation statements)

References 7 publications

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“…burgdorferi s.l. spirochetes in the natural foci [33]. This notion is in correspondence with the results of the current study and our previous investigations of B .…”

Section: Discussionsupporting

confidence: 94%

Borrelia burgdorferi sensu lato prevalence in tick populations in Estonia

et al. 2013

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BackgroundEstonia is located in a unique area of co-distribution of Ixodes ricinus and I. persulcatus, which are the main tick vectors of Borrelia burgdorferi sensu lato. In the last decade, the incidence rate of Lyme borreliosis in Estonia has increased dramatically up to 115.4 per 100,000 in 2012. Here we present the first survey of the presence, the prevalence and genetic characteristics of B. burgdorferi s.l. complex spirochetes in the tick population in Estonia.MethodsDuring the years 2006–2009, 2833 unfed Ixodes ricinus and I. persulcatus were collected from 43 sites in 7 counties in mainland Estonia as well as in 10 sites on the Saaremaa Island. DNA samples from ticks were analyzed individually using nested PCR of the ribosomal 5S-23S spacer region followed by bidirectional sequencing.ResultsThe overall estimated prevalence of B. burgdorferi s.l was 9.7% and varied from 4.9% to 24.2% on the mainland and to 10.7% in Saaremaa Island. Ixodes persulcatus ticks showed significantly higher prevalence rates compared to that in I. ricinus-16.3% and 8.2%, respectively. The most prevalent genospecies was B. afzelii which was detected in 53.5% of Borrelia-positive ticks, followed by B. garinii and B. valaisiana with 26.2% and 5.5%, respectively. Also, B. bavariensis and B. burgdorferi s.s. DNA in single I. ricinus ticks were detected. Borrelia afzelii, B. garinii and B. valaisiana were detected in both tick species. Two genetic subgroups of B. garinii (NT29 and 20047) and two genetic subgroups of B. afzelii (NT28 and VS461) were found to be circulating in all studied regions as well as in both tick species, except B. garinii subgroup NT29, which was found only in I. persulcatus ticks.ConclusionsIn the current study we detected the circulation of five B. burgdorferi s.l. genospecies and estimated the prevalence in ticks in different regions of Estonia. Detection and genetic characterization of Borrelia genospecies, especially those of public health importance, in the natural foci may help assessing high risk areas of human exposure to B. burgdorferi s.l.

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“…burgdorferi s.l. spirochetes in the natural foci [33]. This notion is in correspondence with the results of the current study and our previous investigations of B .…”

Section: Discussionsupporting

confidence: 94%

Borrelia burgdorferi sensu lato prevalence in tick populations in Estonia

et al. 2013

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“…Ticks of the genus Ixodes are widely distributed and are the vectors of tick‐borne encephalitis virus and of various species of Borrelia and Ehrlichia in Russia 7–9. However, to date, no rickettsia has been described in Ixodes species in Russia.…”

Section: Introductionmentioning

confidence: 99%

‘Candidatus Rickettsia tarasevichiae’ in Ixodes persulcatus Ticks Collected in Russia

Шпынов

Fournier

Рудаков

et al. 2003

Annals of the New York Academy of Sciences

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We collected 209 Ixodes persulcatus ticks in various regions of Russia, including the southern Urals and western and eastern Siberia. Using PCR amplification and sequencing of the citrate synthase-encoding gene (gltA), we detected a new rickettsial genotype, which we named "Candidatus Rickettsia tarasevichiae." This bacterium was found in 9.27%, 10.0%, and 20.5% of the ticks collected in western Siberia, eastern Siberia, and the southern Urals, respectively. "Candidatus Rickettsia tarasevichiae" exhibited a 98% and 96% nucleotide sequence homology, with the 16S rDNA and gltA sequence, respectively, of R. canadensis, a rickettsia previously only found in Haemaphysalis leporispalustris ticks in North America. The phylogenetic analysis of "Candidatus Rickettsia tarasevichiae" and other Rickettsia species allowed the creation of a new cluster with high bootstrap values within the Rickettsia genus involving this rickettsia, R. canadensis, and three uncultured rickettsiae from plant insects.

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“…Клещи могут быть заражены несколькими патогенами бактериальной и вирусной природы, опасными для человека [6]. Возбудители иксодового клещевого боррелиоза на данных территориях представлены видами Borrelia burg dorferi sensu lato [3,13]. В настоящее время также установлена циркуляция иных бактериальных патогенов в иксодовых клещах на территории России и сопредельных государств -стран Балтийского региона и Фенноскандии: Anaplasma sp., Ehrlichia sp., Coxiella burnetii, Rickettsia sp.…”

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“…В настоящее время также установлена циркуляция иных бактериальных патогенов в иксодовых клещах на территории России и сопредельных государств -стран Балтийского региона и Фенноскандии: Anaplasma sp., Ehrlichia sp., Coxiella burnetii, Rickettsia sp. [13,14,17]. Возможность инфицирования иксодовых клещей несколькими микроорганизмами увеличивает риск развития микст-инфекции у людей после укуса клеща и требует комплексного подхода к диагностике и профилактике клещевых инфекций.…”

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Bacterial and Viral Pathogens in Ixodes Sp. Ticks in St. Petersburg and Leningrad District

Панферова

Suvorova²,

Шапарь³

et al. 2018

Russian Journal of Infection and Immunity

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Tick-borne infections are the most common group of zooanthroponotic diseases in the Northern Hemisphere. For the Baltic Sea region and Fennoscandia, the dominant infectious pathologies transmitted by ticks are tick-borne borreliosis and tick- borne encephalitis. The presence of vast forested areas, actively visited by people in St. Petersburg and the Leningrad region, contributes to a rather high level of encroachment on the flares and intelligence of the borreliosis and tick-borne encephalitis among the population of these regions. The relatively dangerous pathogens that can be transmitted with the tick bite are also of particular danger: Anaplasma sp., Ehrlichia sp., Coxiella burnetii, Rickettsia sp. In this work, detection was performed using molecular genetic methods of TBE virus, B. burgdorferi sensu lato and Rickettsia sp. in engorged ticksple, as well as questing ticks collected from vegetation. The established levels of infection of TBE on infected ticks, levels of infection by pathogenic Borrelia of questing and engorgeded ticks were approximately equal. Rickettsia was not found in the ticks. The conducted analysis of the pathogens prevalence in comparison with the data of russian and foreign authors. Monitoring the prevalence of tick-borne pathogens is an important issue in the prevention of tick- borne infections in the North-Western Russia.

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The prevalence of Borrelia burgdorferi sensu lato in Ixodes persulcatus and I. ricinus ticks in the zone of their sympatry

Cited by 18 publications

References 7 publications

Borrelia burgdorferi sensu lato prevalence in tick populations in Estonia

Borrelia burgdorferi sensu lato prevalence in tick populations in Estonia

‘Candidatus Rickettsia tarasevichiae’ in Ixodes persulcatus Ticks Collected in Russia

Bacterial and Viral Pathogens in Ixodes Sp. Ticks in St. Petersburg and Leningrad District

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