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Estonia is one of few regions where the distribution area of two medically important tick species,\n                      <jats:italic>Ixodes persulcatus<\/jats:italic>\n                      and\n                      <jats:italic>I. ricinus<\/jats:italic>\n                      , overlaps. The nidicolous rodent-associated\n                      <jats:italic>Ixodes<\/jats:italic>\n                      <jats:italic>trianguliceps<\/jats:italic>\n                      has also recently been shown to be present in Estonia. Although no data are available on human disease(s) caused by tick-borne\n                      <jats:italic>Rickettsia<\/jats:italic>\n                      spp. in Estonia, the presence of three\n                      <jats:italic>Rickettsia<\/jats:italic>\n                      species in non-nidicolous ticks has been previously reported. The aim of this study was to detect, identify and partially characterize\n                      <jats:italic>Rickettsia<\/jats:italic>\n                      species in nidicolous and non-nidicolous ticks attached to rodents in Estonia.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Larvae and nymphs of\n                      <jats:italic>I.<\/jats:italic>\n                      <jats:italic>ricinus<\/jats:italic>\n                      (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u20091004),\n                      <jats:italic>I<\/jats:italic>\n                      .\n                      <jats:italic>persulcatus<\/jats:italic>\n                      (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u200975) and\n                      <jats:italic>I.<\/jats:italic>\n                      <jats:italic>trianguliceps<\/jats:italic>\n                      (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u2009117), all removed from rodents and shrews caught in different parts of Estonia, were studied for the presence of\n                      <jats:italic>Rickettsia<\/jats:italic>\n                      spp. by nested PCR. Ticks were collected from 314 small animals of five species [\n                      <jats:italic>Myodes glareolus<\/jats:italic>\n                      (bank voles),\n                      <jats:italic>Apodemus flavicollis<\/jats:italic>\n                      (yellow necked mice),\n                      <jats:italic>A.<\/jats:italic>\n                      <jats:italic>agrarius<\/jats:italic>\n                      (striped field mice),\n                      <jats:italic>Microtus subterranius<\/jats:italic>\n                      (pine voles) and\n                      <jats:italic>Sorex araneus<\/jats:italic>\n                      (common shrews)]. Rickettsial DNA was detected in 8.7% (103\/1186) of the studied ticks. In addition to identifying\n                      <jats:italic>R.<\/jats:italic>\n                      <jats:italic>helvetica<\/jats:italic>\n                      , which had been previously found in questing ticks, we report here the first time that the recently described\n                      <jats:italic>I.<\/jats:italic>\n                      <jats:italic>trianguliceps-<\/jats:italic>\n                      associated\n                      <jats:italic>Candidatus<\/jats:italic>\n                      Rickettsia uralica has been identified west of the Ural Mountains.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Graphical Abstract<\/jats:title>\n                  <\/jats:sec>","DOI":"10.1186\/s13071-020-04564-7","type":"journal-article","created":{"date-parts":[[2021,1,20]],"date-time":"2021-01-20T08:03:44Z","timestamp":1611129824000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Rickettsia spp. in rodent-attached ticks in Estonia and first evidence of spotted fever group Rickettsia species Candidatus Rickettsia uralica in Europe"],"prefix":"10.1186","volume":"14","author":[{"given":"Maria","family":"Vikentjeva","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Julia","family":"Geller","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jaanus","family":"Remm","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Irina","family":"Golovljova","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2021,1,20]]},"reference":[{"issue":"2","key":"4564_CR1","doi-asserted-by":"publisher","first-page":"379","DOI":"10.1111\/j.1469-185X.2010.00151.x","volume":"86","author":"V Merhej","year":"2011","unstructured":"Merhej V, Raoult D. 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