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

Moreira Soto, Andrés; Carranza, Marco V.; Taylor Castillo, Mayra Lizeth; Calderón Arguedas, Ólger; Hun Opfer, Ruchilia Laya; Troyo Rodríguez, Adriana (2016-07)

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 ...

Rickettsia felis in Ctenocephalides felis from Guatemala and Costa Rica

Troyo Rodríguez, Adriana; Álvarez, Danilo; Taylor Castillo, Mayra Lizeth; Abdalla, Gabriela; Calderón Arguedas, Ólger; Zambrano, María L.; Dasch, Gregory A.; Lindblade, Kim; Hun Opfer, Ruchilia Laya; Eremeeva, Marina E.; Estévez, Alejandra (2012)

Rickettsia felis is an emerging human pathogen associated primarily with the cat flea Ctenocephalides felis.In this study, we investigated the presence of Rickettsia felis in C. felis from Guatemala and Costa Rica. ...

First Report of the Isolation and Molecular Characterization of Rickettsia amblyommii and Rickettsia felis in Central America

Hun Opfer, Ruchilia Laya; Troyo Rodríguez, Adriana; Taylor Castillo, Mayra Lizeth; Barbieri, Amália R. M.; Labruna, Marcelo B. (2011-10-05)

During 2010, 15 adult ticks, identified as Amblyomma cajennense, were collected from horses in Cahuita and Turrialba districts, whereas 7 fleas, identified as Ctenocephalides felis, were collected from a dog in San Jose ...

Pathogenic potential of a Costa Rican strain of ‘Candidatus Rickettsia amblyommii’ in guinea pigs (Cavia porcellus) and protective immunity against Rickettsia rickettsii

Rivas Mejías, Juan José; Moreira Soto, Andrés; Alvarado Barboza, Gilberth; Taylor Castillo, Mayra Lizeth; Calderón Arguedas, Ólger; Hun Opfer, Ruchilia Laya; Corrales Aguilar, Eugenia; Morales Acuña, Juan Alberto; Troyo Rodríguez, Adriana (2015-07)

‘Candidatus Rickettsia amblyommii’ is a spotted fever group rickettsia that is not considered pathogenic, although there is serologic evidence of possible infection in animals and humans. The aim of this study was to ...

Detection of an undescribed Rickettsia sp. in Ixodes boliviensis from Costa Rica

Troyo Rodríguez, Adriana; Moreira Soto, Andrés; Carranza, Marco V.; Calderón Arguedas, Ólger; Hun Opfer, Ruchilia Laya; Taylor Castillo, Mayra Lizeth (2014)

Ixodes boliviensis is a tick of carnivores that is common on domestic dogs. The only Rickettsia that has been detected previously in this species is 'Candidatus Rickettsia andeanae'. We report the detection of an undescribed ...

An update on the detection and treatment of Rickettsia felis

Hun Opfer, Ruchilia Laya; Troyo Rodríguez, Adriana (2012-05-22)

Rickettsia felis was described as a human pathogen almost two decades ago, and human infection is currently reported in 18 countries in all continents. The distribution of this species is worldwide, determined by the ...