{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,7]],"date-time":"2026-10-07T07:59:04Z","timestamp":1791359944349,"version":"4.3.1"},"reference-count":44,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2019,8,23]],"date-time":"2019-08-23T00:00:00Z","timestamp":1566518400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Zoonoses and Public Health"],"published-print":{"date-parts":[[2019,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Portions of northern Mexico are experiencing a re\u2010emergence of Rocky Mountain spotted fever (RMSF), a tickborne disease caused by <jats:italic>Rickettsia rickettsii,<\/jats:italic> a member of the spotted fever group of rickettsiae (SFGR)<jats:italic>.<\/jats:italic> Infection with <jats:italic>R. rickettsii<\/jats:italic> can result in serious and life\u2010threatening illness in people and dogs. Canine seroprevalence has been used as a sentinel for human RMSF in previous studies. This study aims to quantify SFGR seroprevalence in canines in three northern Mexican states and identify risk factors associated with seropositivity. A total of 1,136 serum samples and 942 ticks were obtained from dogs participating in government sterilization campaigns and from animal control facilities in 14 Mexican cities in three states. SFGR antibodies were detected using indirect immunofluorescence antibody assays at titre values \u22651\/64. Six per cent (69 dogs) showed antibodies to SFGR, with the highest seroprevalence reported in Baja California (12%), Coahuila (4%) and Sonora (4%). Dogs from Baja California had three times higher odds of having SFGR antibodies compared to dogs from Sonora (OR\u00a0=\u00a03.38, 95% CI, 1.81\u20136.37). Roughly one quarter (25%) of surveyed dogs were parasitized by ticks (<jats:italic>Rhipicephalus sanguineus<\/jats:italic> sensu lato) at the time of sample collection. A portion of collected ticks were tested for rickettsial DNA using polymerase chain reaction. Positive samples were then sequenced, showing evidence of SFGR including <jats:italic>R. massiliae<\/jats:italic>, <jats:italic>R. parkeri<\/jats:italic> and <jats:italic>R. rickettsii.<\/jats:italic> Dogs that spent the majority of time on the street, such as free\u2010roaming or community\u2010owned dogs, showed a greater risk of tick infestation, seropositivity, bearing seropositive ticks, and may play a pivotal role in the spread of SFGR among communities. Estimating the seroprevalence of SFGR in the canine population can help public health campaigns target high\u2010risk communities for interventions to reduce human RMSF cases.<\/jats:p>","DOI":"10.1111\/zph.12642","type":"journal-article","created":{"date-parts":[[2019,8,23]],"date-time":"2019-08-23T09:27:28Z","timestamp":1566552448000},"page":"918-926","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Seroprevalence of spotted fever group rickettsiae in canines along the United States\u2013Mexico border"],"prefix":"10.1111","volume":"66","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7735-6051","authenticated-orcid":false,"given":"Emily G.","family":"Pieracci","sequence":"first","affiliation":[{"name":"Rickettsial Zoonoses Branch, Division of Vector\u2010Borne Diseases National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Centers for Disease Control and Prevention (CDC) Atlanta Georgia"},{"name":"Epidemic Intelligence Service, Center for Surveillance, Epidemiology and Laboratory Services CDC Atlanta Georgia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Juan Diego Perez","family":"De La Rosa","sequence":"additional","affiliation":[{"name":"Centro Nacional de Servicios de Constataci\u00f3n en Salud Animal Juitepec, Morelos Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniel Luna","family":"Rubio","sequence":"additional","affiliation":[{"name":"Programa de Zoonosis y Rickettsiosis, de Isesalud en el Estado de Baja California Tijuana Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mario Eduardo Solis","family":"Perales","sequence":"additional","affiliation":[{"name":"Programa de Zoonosis Servicios de Salud de Coahuila Cuidad Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Manuel Velasco","family":"Contreras","sequence":"additional","affiliation":[{"name":"Program de Zoonosis Sonora Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Naomi A.","family":"Drexler","sequence":"additional","affiliation":[{"name":"Rickettsial Zoonoses Branch, Division of Vector\u2010Borne Diseases National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Centers for Disease Control and Prevention (CDC) Atlanta Georgia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"William L.","family":"Nicholson","sequence":"additional","affiliation":[{"name":"Rickettsial Zoonoses Branch, Division of Vector\u2010Borne Diseases National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Centers for Disease Control and Prevention (CDC) Atlanta Georgia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jos\u00e9 Javier P\u00e9rez","family":"De La Rosa","sequence":"additional","affiliation":[{"name":"Centro Nacional de Servicios de Constataci\u00f3n en Salud Animal Juitepec, Morelos Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ida H.","family":"Chung","sequence":"additional","affiliation":[{"name":"Rickettsial Zoonoses Branch, Division of Vector\u2010Borne Diseases National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Centers for Disease Control and Prevention (CDC) Atlanta Georgia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cecilia","family":"Kato","sequence":"additional","affiliation":[{"name":"Rickettsial Zoonoses Branch, Division of Vector\u2010Borne Diseases National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Centers for Disease Control and Prevention (CDC) Atlanta Georgia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2270-5573","authenticated-orcid":false,"given":"Casey","family":"Barton Behravesh","sequence":"additional","affiliation":[{"name":"Rickettsial Zoonoses Branch, Division of Vector\u2010Borne Diseases National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Centers for Disease Control and Prevention (CDC) Atlanta Georgia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mar\u00eda Alejandra Gay","family":"Enr\u00edquez","sequence":"additional","affiliation":[{"name":"Centro Nacional de Servicios de Constataci\u00f3n en Salud Animal Juitepec, Morelos Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jes\u00fas Felipe Gonz\u00e1lez","family":"Roldan","sequence":"additional","affiliation":[{"name":"Centro Nacional de Programas Preventivos y Control de Enfermedades Secretaria de Salud Ciudad de Mexico Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Margarita E.","family":"Villarino","sequence":"additional","affiliation":[{"name":"US\u2010Mexico Unit, Division of Global Migration and Quarantine NCEZID, CDC Atlanta 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