First identification of natural infection of Rickettsia rickettsii in the Rhipicephalus sanguineus tick, in the State of Rio de Janeiro

Cunha, Nathalie Costa da; Fonseca, Adivaldo Henrique da; Rezende, Jania de; Rozental, Tatiana; Favacho, Alexsandra Rodrigues de Mendonça; Barreira, Jairo Dias; Massard, Carlos Luiz; Lemos, Elba Regina Sampaio de

doi:10.1590/s0100-736x2009000200003

Cited by 50 publications

(39 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This close proximity to humans makes R. sanguineus the most implicated pathogens in diseases dispersions, such as spotted fever on America (R. rickettsii) (10,11), mediterranean spotted fever (Rickettsia conorii) (12) and canine ehrlichiosis (Ehrlichia canis) (13). In Panama, genetic material of R. amblyommii has been found in R. sanguineus (14), species implicated to cause a mild fever, even when its impact to humans is unknown in many counties.…”

Section: Discussionmentioning

confidence: 99%

Distribución de los ectoparásitos de Canis lupus familiaris L. (Carnivora: Canidae) de Panamá

Bermúdez¹,

C²

2011

Rev MVZ Córdoba

View full text Add to dashboard Cite

Objetive. To determine the distribution of ectoparasites in dogs in Panama. Materials and methods. There were surveyed 720 canines belonging to 57 communities. Results. The results showed that 84% of the dogs were infested with at least one species of ectoparasite. Dogs from lowlands showed a higher percentage of parasitism and a greater biodiversity of parasites than dogs from highlands. There were found seven species of ticks, four species of fleas, two species of lice, and one specie of botfly. The ticks Rhipicephalus sanguineus, Amblyomma cajennense, A. ovale and the flea Ctenocephalides felis were widespread; however Ixodes boliviensis and Pulex simulans showed a much narrower geographic distribution and they were found only in dogs from highlands. The flea species Rhopalopsyllus cacicus and the tick Haemaphysalis juxtakochi were found for the first time in panamanian dogs. Conclusions. The environmental situation in Panama, can encourage that wildlife ectoparasites parasitized dogs in absence of their native hosts. This condition may increase transmission risk of some diseases where the ticks and fleas are vectors. 2275 RESUMENObjetivo. Determinar la distribución de ectoparásitos de perros en Panamá. Materiales y métodos. Se examinaron 720 individuos en 57 comunidades. Resultados. Los resultados demostraron que el 84% de los perros presentaron al menos una especie de ectoparásito. Los perros de tierras bajas mostraron un mayor porcentaje de parasitismo y mayor biodiversidad de parásitos que los animales de tierras altas. Se encontraron siete especies de garrapatas, cuatro de pulgas, dos de piojos y una de mosca. Las garrapatas Rhipicephalus sanguineus, Amblyomma cajennense, A. ovale y la pulga Ctenocephalides felis mantuvieron una distribución más amplia; mientras que Ixodes boliviensis y Pulex simulans sólo se reportaron en tierras altas. La pulga Rhopalopsyllus cacicus y la garrapata Haemaphysalis juxtakochi se reportaron por primera vez en perros de Panamá. Conclusiones. La situación medioambiental en Panamá puede propiciar que la fauna de ectoparásitos parasiten perros ante la ausencia de hospederos nativos, esta condición puede aumentar el riesgo de transmisión de algunas enfermedades en las que las garrapatas y pulgas son vectores. Conservation of ectoparasites.The ectoparasites were preserved in 95% alcohol. Engorged ticks nymphs were collected and kept alive in plastic bottles plugged with cotton, and then placed in an incubator (average temperature of 29ºC and 80% of humity) until molt.

show abstract

Section: Discussionmentioning

confidence: 99%

Distribución de los ectoparásitos de Canis lupus familiaris L. (Carnivora: Canidae) de Panamá

Bermúdez¹,

C²

2011

Rev MVZ Córdoba

View full text Add to dashboard Cite

show abstract

“…(DEMMA et al, 2005;WIKSWO et al, 2007;PIRANDA et al, 2008;CUNHA et al, 2009). In addition, research has studied its involvement, under laboratory conditions, in the epidemiology of canine visceral leishmaniasis (COUTINHO et al, 2005).…”

Section: O Objetivo Deste Trabalho Foi Avaliar O Ganho De Peso De Fêmmentioning

confidence: 99%

Assessment of weight gain and biological parameters of Rhipicephalus sanguineus females fed artificially via capillary tubes

et al. 2010

View full text Add to dashboard Cite

show abstract

“…Amblyomma aureolatum is considered the main vector of R. rickettsii in the São Paulo region (19) and has been reported to frequently parasitize dogs in counties (Nazaré Paulista and Mairiporã) close to the study region (20) . Moreover, based on the molecular characterization of R. rickettsii in R. sanguineus in Brazil, the possible risk of an active, or even an indirect, participation of R. sanguineusin the transmission of R. rickettsii to humans cannot be excluded (21) . In addition, a potential risk of transmission of BSF or other rickettsial infectionsviaparasitized dogs cannot be ruled out.…”

Section: Discussionmentioning

confidence: 99%

Antibodies for Rickettsia spp. in patients with negative serology for dengue virus, leptospirosis, and meningococcal disease in municipalities of São Paulo State, Brazil

Prata

Souza

Angerami

et al. 2016

Rev. Soc. Bras. Med. Trop.

View full text Add to dashboard Cite

Introduction: Brazilian spotted fever is an infectious disease with a high mortality rate if not treated early. Differential diagnosis is difficult, as the first clinical signs are non-specific and can be confused with other diseases. The aim of the study was to investigate evidence of infection with Rickettsia rickettsii and Rickettsia parkeri in negative sera samples, collected in 2014, from patients with suspected leptospirosis, dengue fever, and meningococcal disease in Atibaia and Bragança Paulista municipalities of the State of São Paulo. Methods: The samples stored at the Institute Adolfo Lutz in Campinas were tested using an indirect immunofluorescence assay (IFA) with IgG and IgM against R. rickettsii and R. parkeri. Real-time polymerase chain reaction (PCR) testing was performed for the sera samples of patients who died (n = 3), those with initial suspicion of meningococcal disease (n = 6), and those with positive IFA results. Results: Of 258 samples from Bragança Paulista, 4 (1.6%) were positive, with IgG titers of 1:64 and 1:128 against R. rickettsii and R. parkeri, respectively. Of 155 samples from Atibaia, 2 (1.3%) were positive, with IgG titers of 1:64 and 1:128 against R. rickettsii and R. parkeri, respectively. No sample showed positive PCR results. Conclusions: This serological investigation suggests there is evidence of exposure to Rickettsia spp. in residents of areas that have environmental conditions favorable to the spread of bacteria, in which Brazilian spotted fever incidence was not previously confirmed.

show abstract

First identification of natural infection of Rickettsia rickettsii in the Rhipicephalus sanguineus tick, in the State of Rio de Janeiro

Cited by 50 publications

References 25 publications

Distribución de los ectoparásitos de Canis lupus familiaris L. (Carnivora: Canidae) de Panamá

Distribución de los ectoparásitos de Canis lupus familiaris L. (Carnivora: Canidae) de Panamá

Assessment of weight gain and biological parameters of Rhipicephalus sanguineus females fed artificially via capillary tubes

Antibodies for Rickettsia spp. in patients with negative serology for dengue virus, leptospirosis, and meningococcal disease in municipalities of São Paulo State, Brazil

Contact Info

Product

Resources

About