Rickettsia Infection in Dogs and<i>Rickettsia parkeri</i>in<i>Amblyomma tigrinum</i>Ticks, Cochabamba Department, Bolivia

Tomassone, Laura; Conte, Valeria; Parrilla, G.; Meneghi, Daniele De

doi:10.1089/vbz.2009.0126

Cited by 46 publications

(28 citation statements)

References 27 publications

(25 reference statements)

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“…The pathogenic role of these two South American strains is unknown. Finally, an R. aeschlimannii-like strain was reported in the tick A. tigrinum in Bolivia (205). Because R. aeschlimannii has been reported only in the Old World, further studies are needed to elucidate the taxonomic status of this R. aeschlimannii-like strain from Bolivia.…”

Section: South Americamentioning

confidence: 99%

Update on Tick-Borne Rickettsioses around the World: a Geographic Approach

et al. 2013

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SUMMARY Tick-borne rickettsioses are caused by obligate intracellular bacteria belonging to the spotted fever group of the genus Rickettsia . These zoonoses are among the oldest known vector-borne diseases. However, in the past 25 years, the scope and importance of the recognized tick-associated rickettsial pathogens have increased dramatically, making this complex of diseases an ideal paradigm for the understanding of emerging and reemerging infections. Several species of tick-borne rickettsiae that were considered nonpathogenic for decades are now associated with human infections, and novel Rickettsia species of undetermined pathogenicity continue to be detected in or isolated from ticks around the world. This remarkable expansion of information has been driven largely by the use of molecular techniques that have facilitated the identification of novel and previously recognized rickettsiae in ticks. New approaches, such as swabbing of eschars to obtain material to be tested by PCR, have emerged in recent years and have played a role in describing emerging tick-borne rickettsioses. Here, we present the current knowledge on tick-borne rickettsiae and rickettsioses using a geographic approach toward the epidemiology of these diseases.

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Section: South Americamentioning

confidence: 99%

Update on Tick-Borne Rickettsioses around the World: a Geographic Approach

et al. 2013

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“…A. triste has been found infected with R. parkeri in Uruguay 16,32 . In addition to the USA and Uruguay, R. parkeri has been also detected in A. triste from Brazil, Argentina and in Amblyomma tigrinum from Bolivia 14,25,30 . Recently in Argentina, nine cases of SFG rickettsiosis associated to R. parkeri infection have been reported.…”

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confidence: 99%

Rickettsia parkeri: a Rickettsial pathogen transmitted by ticks in endemic areas for spotted fever rickettsiosis in southern Uruguay

Venzal

Estrada-Peña

Portillo

et al. 2012

Rev. Inst. Med. trop. S. Paulo

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SUMMARYAt first Rickettsia conorii was implicated as the causative agent of spotted fever in Uruguay diagnosed by serological assays. Later Rickettsia parkeri was detected in human-biting Amblyomma triste ticks using molecular tests. The natural vector of R. conorii, Rhipicephalus sanguineus, has not been studied for the presence of rickettsial organisms in Uruguay. To address this question, 180 R. sanguineus from dogs and 245 A. triste from vegetation (flagging) collected in three endemic localities were screened for spotted fever group (SFG) rickettsiosis in southern Uruguay. Tick extracted DNA pools were subjected to PCR using primers which amplify a fragment of the rickettsial gltA gene. Positive tick DNA pools with these primers were subjected to a second PCR round with primers targeting a fragment of the ompA gene, which is only present in SFG rickettsiae. No rickettsial DNA was detected in R. sanguineus. However, DNA pools of A. triste were found to be positive for a rickettsial organism in two of the three localities, with prevalences of 11.8% to 37.5% positive pools. DNA sequences generated from these PCR-positive ticks corresponded to R. parkeri. These findings, joint with the aggressiveness shown by A. triste towards humans, support previous data on the involvement of A. triste as vector of human infections caused by R. parkeri in Uruguay.

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“…Dogs may serve as sentinels of risk for RMSF in humans due to their susceptibility to R. rickettsii and high rates of tick exposure [68]. Dogs have been characterized as human rickettsiosis sentinels in various Latin American countries, by sharing the same tick species infesting humans and dogs [69,70].…”

Section: The Disease In Dogsmentioning

confidence: 99%

Bacterial canine vector-borne zoonotic diseases in “One Health” concept

Valiakos

2016

Int J One Health

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Canine vector-borne diseases constitute a large group of diseases transmitted by arthropods with worldwide distribution. A wide range of bacterial, viral, and parasitic agents that are transmitted by vectors cause disease to dogs, many of which can also affect humans and thus have an important zoonotic potential. Bacterial agents that are transmitted by vectors have been considered less important than viral or parasitic agents and are not commonly discussed in companion animal practice. However, close contact between pet animals and people offers favorable conditions for transmission of these bacteria. Many of these diseases have become a focus of interest for scientists in recent years. Increase in reservoir abundance, climate change, changing habitat structure, socio-political changes, and imports of dogs for welfare reasons and trade as well as traveling are considered to be potential factors for the pathogens and vectors introduction into new areas. Apart from, the veterinary aspect of these diseases, domestic dogs could play a central epidemiological role in the transmission of bacterial agents to humans, acting as reservoirs and sentinels, a circumstance that requires a One Health approach. This review highlights the most important of these bacterial agents, presenting updated current knowledge with special reference to treatment approach and One Health aspect.

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Rickettsia Infection in Dogs andRickettsia parkeriinAmblyomma tigrinumTicks, Cochabamba Department, Bolivia

Cited by 46 publications

References 27 publications

Update on Tick-Borne Rickettsioses around the World: a Geographic Approach

Update on Tick-Borne Rickettsioses around the World: a Geographic Approach

Rickettsia parkeri: a Rickettsial pathogen transmitted by ticks in endemic areas for spotted fever rickettsiosis in southern Uruguay

Bacterial canine vector-borne zoonotic diseases in “One Health” concept

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