Exposure of dogs to spotted fever group rickettsiae in urban sites associated with human rickettsioses in Costa Rica


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Bibliographic Details
Authors: Moreira Soto, Andrés, Carranza, Marco V., Taylor Castillo, Mayra Lizeth, Calderón Arguedas, Ólger, Hun Opfer, Ruchilia Laya, Troyo Rodríguez, Adriana
Format: artículo original
Publication Date:2016
Description:The zoonotic transmission cycles of Rickettsia rickettsii and other spotted fever group (SFG) rickettsiae in Latin America have usually been associated with rural or sylvatic environments, although domestic dogs can be implicated in more populated settings. In this study, exposure of dogs to SFG rickettsiae in the Greater Metropolitan Area of Costa Rica was investigated. Dogs from sites associated with human cases and from dog shelters were evaluated by indirect immunofluorescence assay (IFA) using antigen of SFG rickettsiae. Rickettsia spp. were detected in ectoparasites by polymerase chain reaction (PCR). A total 18.5% (31/168) of dogs associated with human cases and 6.8% (11/161) of dogs in shelters had IgG end titers ≥ 64 to Rickettsia spp. The odds of being seropositive were greater in dogs from areas associated with human cases when compared to shelters (OR: 3.2; 95% C.I: 1.5–5.6). Rhipicephalus sanguineus sensu lato (s. l.) was present in all sites associated with human cases. Rickettsia felis URRWXCal2 and R. felislike RF2125 were detected in Ctenocephalides felis, and Rickettsia sp. IbR/CRC in Ixodes boliviensis. Results demonstrate that dogs from the main urban center of Costa Rica have been exposed to SFG rickettsiae, especially in areas with known human infection. Both human and animal health sectors must be aware of possible rickettsial diseases in urban areas, where dogs may also serve as sentinels for human infection
Institution:Universidad de Costa Rica
OAI Identifier:oai:kerwa.ucr.ac.cr:10669/30364
Online Access:http://www.sciencedirect.com/science/article/pii/S1877959X16300437?via%3Dihub
Access Level:acceso abierto
Rocky mountain spotted fever
Urban environment
Costa Rica
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