{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T14:02:03Z","timestamp":1787061723643,"version":"build-2736575974"},"reference-count":82,"publisher":"SAGE Publications","issue":"12","license":[{"start":{"date-parts":[[2021,12,1]],"date-time":"2021-12-01T00:00:00Z","timestamp":1638316800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2021,12,1]],"date-time":"2021-12-01T00:00:00Z","timestamp":1638316800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Vector-Borne and Zoonotic Diseases"],"published-print":{"date-parts":[[2021,12]]},"abstract":"\n In the United States,\n Dermacentor variabilis<\/jats:italic>\n and\n Dermacentor andersoni<\/jats:italic>\n are considered key vectors for\n Rickettsia rickettsii<\/jats:italic>\n , the causative agent of Rocky Mountain spotted fever. Through regional surveillance, a wide diversity of\n Rickettsia<\/jats:italic>\n spp. have been documented in\n D. variabilis<\/jats:italic>\n , and\n Dermacentor<\/jats:italic>\n spp. has been suggested as potential vectors for various other pathogens, including\n Babesia<\/jats:italic>\n spp. and\n Ehrlichia canis<\/jats:italic>\n . To better define the prevalence and diversity of pathogens in\n Dermacentor<\/jats:italic>\n spp. across the United States, 848 ticks collected from dogs and cats in 44\/50 states in 2018\u20132019 were tested by PCR for\n Rickettsia<\/jats:italic>\n spp.-specific 17\u2009kDa and ompA gene fragments; a subset of\n Dermacentor<\/jats:italic>\n spp. was also tested with PCR, targeting fragments of the 18S and large subunit region rRNA genes of\n Babesia<\/jats:italic>\n spp. and 16S rRNA genes of\n E. canis<\/jats:italic>\n .\n Rickettsia<\/jats:italic>\n spp. was identified in 12.5% (106\/848) of ticks. Species detected include\n Rickettsia montanensis<\/jats:italic>\n (\n n<\/jats:italic>\n \u2009=\u200964 ticks),\n Rickettsia bellii<\/jats:italic>\n (\n n<\/jats:italic>\n \u2009=\u200915 ticks),\n Rickettsia rhipicephali<\/jats:italic>\n (\n n<\/jats:italic>\n \u2009=\u200913 ticks),\n Rickettsia peacockii<\/jats:italic>\n (\n n<\/jats:italic>\n \u2009=\u20098 ticks),\n Rickettsia amblyommatis<\/jats:italic>\n (\n n<\/jats:italic>\n \u2009=\u20093 ticks),\n Rickettsia cooleyi<\/jats:italic>\n (\n n<\/jats:italic>\n \u2009=\u20091 tick), and unclassified\n Rickettsia<\/jats:italic>\n spp. (\n n<\/jats:italic>\n \u2009=\u20092 ticks). Ticks with\n R. montanensis<\/jats:italic>\n and\n R. bellii<\/jats:italic>\n were submitted from every U.S. region;\n R. rhipicephali<\/jats:italic>\n was predominantly detected in ticks from the southern half of the United States, and all\n R. peacockii<\/jats:italic>\n -positive ticks were\n D. andersoni<\/jats:italic>\n that originated from the Rocky Mountain states.\n Ehrlichia canis<\/jats:italic>\n was not detected in any\n Dermacentor<\/jats:italic>\n spp., and\n Babesia conradae<\/jats:italic>\n was detected in two\n Dermacentor albipictus<\/jats:italic>\n . Because most ticks had fed on dogs or cats before submission, these findings do not implicate a given\n Dermacentor<\/jats:italic>\n sp. as a primary vector of these agents, but in regard to\n Rickettsia<\/jats:italic>\n spp., the data do support other published work showing\n D. variabilis<\/jats:italic>\n harbors a diversity of\n Rickettsia<\/jats:italic>\n species with unknown implications for animal and human health.\n <\/jats:p>","DOI":"10.1089\/vbz.2021.0047","type":"journal-article","created":{"date-parts":[[2021,12,27]],"date-time":"2021-12-27T10:08:41Z","timestamp":1640599721000},"page":"911-920","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":16,"title":["Identification of\n Rickettsia<\/i>\n spp. and\n Babesia conradae<\/i>\n in\n Dermacentor<\/i>\n spp. Collected from Dogs and Cats Across the United States"],"prefix":"10.1177","volume":"21","author":[{"given":"Kathryn T.","family":"Duncan","sequence":"first","affiliation":[{"name":"Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University, Stillwater, Oklahoma, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Amber","family":"Grant","sequence":"additional","affiliation":[{"name":"Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University, Stillwater, Oklahoma, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Britny","family":"Johnson","sequence":"additional","affiliation":[{"name":"Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University, Stillwater, Oklahoma, USA."},{"name":"Rickettsial Zoonoses Branch, Division of Vector-Borne Disease, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kellee D.","family":"Sundstrom","sequence":"additional","affiliation":[{"name":"Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University, Stillwater, Oklahoma, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Meriam N.","family":"Saleh","sequence":"additional","affiliation":[{"name":"Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University, Stillwater, Oklahoma, USA."},{"name":"Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Susan E.","family":"Little","sequence":"additional","affiliation":[{"name":"Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University, Stillwater, Oklahoma, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2021,12,16]]},"reference":[{"key":"e_1_3_4_2_1","doi-asserted-by":"crossref","unstructured":"Ammerman NC Swanson KI Anderson JM Schwartz TR et al. 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