Detection and identification of Rickettsia species in Ixodes tick populations from Estonia
2015 (English)In: Ticks and Tick-borne Diseases, ISSN 1877-959X, E-ISSN 1877-9603, Vol. 6, no 6, 689-694 p.Article in journal (Refereed) Published
A total of 1640 ticks collected in different geographical parts of Estonia were screened for the presence of Rickettsia species DNA by real-time PCR. DNA of Rickettsia was detected in 83 out of 1640 questing ticks with an overall prevalence of 5.1%. The majority of the ticks infected by rickettsiae were Ixodes ricinus (74 of 83), while 9 of the 83 positive ticks were Ixodes persulcatus. For rickettsial species identification, a part of the citrate synthasegltA gene was sequenced. The majority of the positive samples were identified as Rickettsia helvetica (81 out of 83) and two of the samples were identified as Rickettsia monacensis and Candidatus R. tarasevichiae, respectively. Genetic characterization based on the partial gltA gene showed that the Estonian sequences within the R. helvetica, R. monacensis and Candidatus R. tarasevichiae species demonstrated 100% similarity with sequences deposited in GenBank, originating from Rickettsia species distributed over large territories from Europe to Asia.
Place, publisher, year, edition, pages
2015. Vol. 6, no 6, 689-694 p.
Rickettsia species, Rickettsia helvetica, Rickettsia monacensis, Candidatus R. tarasevichiae, Ixodes tick species, Prevalence
Immunology in the medical area Infectious Medicine
IdentifiersURN: urn:nbn:se:uu:diva-265948DOI: 10.1016/j.ttbdis.2015.06.001ISI: 000362143800001PubMedID: 26096853OAI: oai:DiVA.org:uu-265948DiVA: diva2:866914