{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T05:32:55Z","timestamp":1787031175220,"version":"build-2736575974"},"reference-count":91,"publisher":"American Society of Tropical Medicine and Hygiene","issue":"5","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2025,11,5]]},"abstract":"<jats:title>ABSTRACT.<\/jats:title>\n                  <jats:p>\n                    <jats:italic>Haemaphysalis leporispalustris<\/jats:italic>\n                    (the rabbit tick) is one of the most broadly distributed hard tick species in the Americas. In 2018, investigators amplified DNA from a spotted fever group\n                    <jats:italic>Rickettsia<\/jats:italic>\n                    (SFGR) species found in host-seeking larvae and nymphs of\n                    <jats:italic>H. leporispalustris<\/jats:italic>\n                    collected in northern California and proposed the name\n                    <jats:italic>Candidatus<\/jats:italic>\n                    \u201cRickettsia lanei\u201d using results obtained via multilocus sequence typing. Several years later, other investigators reported the amplification of DNA from the blood of two severely ill patients in northern California that demonstrated near-identical sequences with several gene sequences of\n                    <jats:italic>Ca.<\/jats:italic>\n                    \u201cR. lanei,\u201d suggesting that this SFGR is pathogenic to humans. Recently, nearly complete genetic identity was identified between segments of the outer membrane protein A gene of\n                    <jats:italic>Ca<\/jats:italic>\n                    . \u201cR. lanei\u201d and an otherwise unidentified SFGR isolate designated as HLP 7421, which was established in 1961 from\n                    <jats:italic>H. leporispalustris<\/jats:italic>\n                    collected in the Bitterroot Valley of western Montana. Herein, the results of whole-genome sequencing of HLP 7421 are reported, revealing a 1,270,740 base pair chromosome most similar to that of\n                    <jats:italic>Rickettsia rickettsii<\/jats:italic>\n                    subsp.\n                    <jats:italic>californica<\/jats:italic>\n                    , the etiologic agent of Pacific Coast tick fever. Digital DNA\u2013DNA hybridization and orthologous average nucleotide identity percentages between HLP 7421 and several closely related SFGR species meet the criteria for species identification using one genome-based algorithm for defining taxa in the\n                    <jats:italic>Rickettsia<\/jats:italic>\n                    genus. The name\n                    <jats:italic>Rickettsia lanei<\/jats:italic>\n                    is proposed for this pathogen, and its potential contribution to the evolving mosaic of tick-borne spotted fevers in the Americas is discussed.\n                  <\/jats:p>","DOI":"10.4269\/ajtmh.25-0134","type":"journal-article","created":{"date-parts":[[2025,9,9]],"date-time":"2025-09-09T18:27:34Z","timestamp":1757442454000},"page":"957-965","source":"Crossref","is-referenced-by-count":8,"title":["Rickettsia lanei, sp. nov. (Rickettsiales: Rickettsiaceae), a Newly Recognized Pathogen of Humans Associated with the Rabbit Tick, Haemaphysalis leporispalustris (Acari: Ixodidae)"],"prefix":"10.4269","volume":"113","author":[{"given":"Christopher D.","family":"Paddock","sequence":"first","affiliation":[{"name":"Rickettsial Zoonoses Branch, Centers for Disease Control and Prevention, Atlanta, Georgia;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adrian","family":"Harris","sequence":"additional","affiliation":[{"name":"Rickettsial Zoonoses Branch, Centers for Disease Control and Prevention, Atlanta, Georgia;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tina R.","family":"Clark","sequence":"additional","affiliation":[{"name":"Laboratory of Bacteriology, Rocky Mountain Laboratories, Hamilton, Montana;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hannah A.","family":"Bullock","sequence":"additional","affiliation":[{"name":"Infectious Diseases Pathology Branch, Centers for Disease Control and Prevention, Atlanta, Georgia;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joy A.","family":"Hecht","sequence":"additional","affiliation":[{"name":"Rickettsial Zoonoses Branch, Centers for Disease Control and Prevention, Atlanta, Georgia;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jason T.","family":"Ladner","sequence":"additional","affiliation":[{"name":"The Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, Arizona"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sandor E.","family":"Karpathy","sequence":"additional","affiliation":[{"name":"Rickettsial Zoonoses Branch, Centers for Disease Control and Prevention, Atlanta, Georgia;"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2795","reference":[{"key":"b1","series-title":"Am J Trop Med","first-page":"39","article-title":"Transmission of Rocky Mountain spotted fever by the rabbit tick Haemaphysalis leporispalustris Packard","volume":"s1\u20133","author":"Parker","year":"1923"},{"key":"b2","series-title":"J Parasitol","first-page":"1","article-title":"Distribution and hosts of certain North American ticks","volume":"31","author":"Bishopp","year":"1945"},{"key":"b3","series-title":"The Genera Boophilus, Rhipicephalus, and Haemaphysalis (Ixodidae) of the New World","author":"Cooley","year":"1946"},{"key":"b4","series-title":"A Handbook to the Ticks of Canada (Ixodida: Ixodidae, Argasidae)","author":"Lindquist","year":"2016"},{"key":"b5","series-title":"J Parasitol","first-page":"355","article-title":"Records and synonymy of New World Haemaphysalis ticks, with descriptions of the nymph and larva of H. juxtakochi Cooley","volume":"46","author":"Kohls","year":"1960"},{"key":"b6","series-title":"Ticks of the Southern Cone of America. 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