title: Seroprevalence of Tick-Borne Pathogens and Tick Infestation in Dogs from Tapirapé and Karajá Indigenous Communities, Brazil.
abstract: With the aim of studying some tick-borne diseases, a total of 327 dogs (114 from Tapirapé and 213 from Karajá indigenous ethnicity, Mato Grosso, MT, Brazil) were sampled. Serum samples were submitted to the indirect fluorescence antibody test (IFAT) to detect antibodies against Babesia vogeli, Ehrlichia canis, and Rickettsia spp. Possible associations of risk factors and the occurrence of seroreativity to tick-borne agents and tick infestations were analyzed through chi-squared tests. Among 327 dogs, 46 (13.15%) were seropositive for B. vogeli and 47 (14.37%) for E. canis. The B. vogeli seroprevalence was higher for Karajá and for adult dogs (p>0.05). No association was found for E. canis seroprevalence. From 103 serum samples tested with rickettsial antigens, 90 (87%) dogs were seropositive to Rickettsia spp., with highest reactivity to Rickettsia amblyommii. Canine seropositivity to Rickettsia spp. was associated (p<0.05) with ethnicity (higher seroprevalence in Tapirapé dogs), age (higher in adults), and hunting (higher among hunting dogs). From the 327 dogs, 39 (11.9%) were infested by ticks (Amblyomma cajennense sensu stricto, Amblyomma ovale, Amblyomma oblongoguttatum, Amblyomma tigrinum, and Rhipicephalus sanguineus). Infestations by Amblyomma spp. ticks were higher in dogs from Tapirapé community and in hunting dogs (p<0.05). Regarding R. sanguineus, infestations were higher (p<0.05) among young dogs.
authors.affiliation: 1 Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo , São Paulo, SP, Brazil .|2 Instituto de Biodiversidade e Floresta, Universidade Federal do Oeste do Pará , Santarém, PA, Brazil .
authors.forename: Antonio Humberto Hamad
authors.initials: AH
authors.lastname: Minervino
authors.affiliation: 1 Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo , São Paulo, SP, Brazil .
authors.forename: Julia Teresa Ribeiro
authors.initials: JT
authors.lastname: Lima
authors.affiliation: 1 Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo , São Paulo, SP, Brazil .
authors.forename: Herbert Sousa
authors.initials: HS
authors.lastname: Soares
authors.affiliation: 3 Faculdade de Ciências Agrárias e Biológicas, Universidade do Estado de Mato Grosso-UNEMAT, Cáceres, MT, Brazil .
authors.forename: Antonio Francisco
authors.initials: AF
authors.lastname: Malheiros
authors.affiliation: 1 Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo , São Paulo, SP, Brazil .
authors.forename: Arlei
authors.initials: A
authors.lastname: Marcili
authors.affiliation: 1 Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo , São Paulo, SP, Brazil .
authors.forename: Felipe da Silva
authors.initials: Fda S
authors.lastname: Krawczak
authors.affiliation: 1 Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo , São Paulo, SP, Brazil .
authors.forename: Marcos Gomes
authors.initials: MG
authors.lastname: Lopes
authors.affiliation: 1 Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo , São Paulo, SP, Brazil .
authors.forename: Thiago Fernandes
authors.initials: TF
authors.lastname: Martins
authors.affiliation: 2 Instituto de Biodiversidade e Floresta, Universidade Federal do Oeste do Pará , Santarém, PA, Brazil .
authors.forename: Thiago Rocha
authors.initials: TR
authors.lastname: Moreira
authors.affiliation: 3 Faculdade de Ciências Agrárias e Biológicas, Universidade do Estado de Mato Grosso-UNEMAT, Cáceres, MT, Brazil .
authors.forename: Múcio Flávio Barbosa
authors.initials: MF
authors.lastname: Ribeiro
authors.affiliation: 1 Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo , São Paulo, SP, Brazil .
authors.forename: Marcelo B
authors.initials: MB
authors.lastname: Labruna
authors.affiliation: 1 Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo , São Paulo, SP, Brazil .
authors.forename: Solange Maria
authors.initials: SM
authors.lastname: Gennari
mesh_terms: D000818:Animals; D000907:Antibodies, Bacterial / Q000097:blood; D001096:Arachnid Vectors / Q000382:microbiology* / Q000469:parasitology; D001403:Babesia / Q000276:immunology; D001938:Brazil / Q000453:epidemiology; D004283:Dog Diseases / Q000453:epidemiology*; D004285:Dogs; D041061:Ehrlichia canis / Q000276:immunology; D005260:Female; D019084:Fluorescent Antibody Technique, Indirect / Q000662:veterinary; D006801:Humans; D026863:Ixodidae / Q000382:microbiology* / Q000469:parasitology; D008297:Male; D012281:Rickettsia / Q000276:immunology; D012307:Risk Factors; D016036:Seroepidemiologic Studies; D013984:Tick Infestations / Q000453:epidemiology / Q000662:veterinary*; D017282:Tick-Borne Diseases / Q000453:epidemiology / Q000662:veterinary*
chemical_list: D000907:Antibodies, Bacterial
keywords: Amazon; Babesia; Dogs; Ehrlichia; Indigenous communities; Rickettsia; Ticks