2009
DOI: 10.1111/j.1749-6632.2009.04516.x
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Abstract: Until the year 2000, only three Rickettsia species were known in South America: (i) Rickettsia rickettsii, transmitted by the ticks Amblyomma cajennense, and Amblyomma aureolatum, reported in Colombia, Argentina, and Brazil, where it is the etiological agent of Rocky Mountain spotted fever; (ii) Rickettsia prowazekii, transmitted by body lice and causing epidemic typhus in highland areas, mainly in Peru; (iii) Rickettsia typhi, transmitted by fleas and causing endemic typhus in many countries. During this new … Show more

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Cited by 372 publications
(385 citation statements)
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“…This rickettsial strain was recently found in the immature stages (5 larvae and 1 nymph) of A. longirostre collected from passerine birds in SP (Ogrzewalska et al 2008). Although different strains of R. amblyommii have been reported to infect different tick species of the New World (Labruna 2009, Castellaw et al 2010, Ogrzewalska et al 2010, Bermúdez et al 2011, the pathogenicity of R. amblyommii in humans remains to be demonstrated. Interestingly, there is serological evidence suggesting that it is a human pathogen in the United States (Apperson et al 2008).…”
Section: Discussionmentioning
confidence: 99%
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“…This rickettsial strain was recently found in the immature stages (5 larvae and 1 nymph) of A. longirostre collected from passerine birds in SP (Ogrzewalska et al 2008). Although different strains of R. amblyommii have been reported to infect different tick species of the New World (Labruna 2009, Castellaw et al 2010, Ogrzewalska et al 2010, Bermúdez et al 2011, the pathogenicity of R. amblyommii in humans remains to be demonstrated. Interestingly, there is serological evidence suggesting that it is a human pathogen in the United States (Apperson et al 2008).…”
Section: Discussionmentioning
confidence: 99%
“…This pathogen is endemic in the southeastern states [Espírito Santo, Minas Gerais, Rio de Janeiro, São Paulo (SP)] of the country, where it is transmitted to humans chiefly by the tick Amblyomma cajennense but is also transmitted by Amblyomma aureolatum in a few areas of SP (Labruna 2009). From 1990 confirmed cases of Brazilian spotted fever were reported in these southeastern states; the fatality rates varied from 20-33% among the four states (data available from the Brazilian Ministry of Health site: saude.gov.br).…”
mentioning
confidence: 99%
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“…Se considera que la pulga de perros y gatos, C. felis, es vector biológico de R. felis (26,27), y se calcula que un alto porcentaje de estas pulgas está infectada con esta especie (5 (29). Hasta el momento, los hallazgos serológicos sugieren que la zarigüeya Didelphis virgiana y los gatos pueden ser infectados por R. felis (30)(31)(32).…”
Section: Análisis De Laboratoriounclassified
“…En Centroamérica y Suramérica, R. rickettsii es transmitida a los humanos principalmente por Amblyomma cajennense (4). Sin embargo, las tasas de infección por R. rickettsii en las garrapatas son bajas en condiciones naturales (8)(9)(10).…”
unclassified