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The approach used for\n                      <jats:italic>E. chaffeensis<\/jats:italic>\n                      detection in the tick sample ensured that the identified DNA came from an active tick infection, not residual host blood in the gut. After sequencing generic genes (\n                      <jats:italic>16S ribosomal RNA [rRNA], 23S rRNA<\/jats:italic>\n                      and\n                      <jats:italic>groEl<\/jats:italic>\n                      ) and the specific\n                      <jats:italic>E. chaffeensis<\/jats:italic>\n                      variable-length polymerase chain reaction target (VLPT) molecular marker, we identified a genotype previously reported in Argentina.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>\n                      This first-time contemporary detection of zoonotic\n                      <jats:italic>E. chaffeensis<\/jats:italic>\n                      in both a wild vertebrate host and its parasitic generalist ticks in a natural setting, provides direct evidence of a putative transmission cycle in Argentina, highlighting the need of implementing multidisciplinary surveillance systems.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Graphical Abstract<\/jats:title>\n                  <\/jats:sec>","DOI":"10.1186\/s13071-025-07211-1","type":"journal-article","created":{"date-parts":[[2026,1,3]],"date-time":"2026-01-03T05:31:15Z","timestamp":1767418275000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Molecular detection of Ehrlichia chaffeensis in marsh deer (Blastocerus dichotomus) and their parasitic Amblyomma triste ticks in Argentina suggests a local transmission cycle"],"prefix":"10.1186","volume":"19","author":[{"given":"Eliana Carolina","family":"Guillemi","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mar\u00eda Marcela","family":"Orozco","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Iara","family":"Figini","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paula","family":"Blanco","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marisa Diana","family":"Farber","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,1,2]]},"reference":[{"key":"7211_CR1","doi-asserted-by":"crossref","unstructured":"Gubler DJ. 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