<i>Rickettsia sibirica</i>Isolation from a Patient and Detection in Ticks, Portugal

Sousa, Rita de; Barata, Conceição; Vitorino, Liliana; Santos-Silva, Maria Margarida; Carrapato, Carlos; Torgal, Jorge; Walker, David H.; Bacellar, Fátima

doi:10.3201/eid1207.051494

Cited by 100 publications

(67 citation statements)

References 24 publications

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“…Though less common, this tick can also be found in other domestic animals, as well as in wild ungulates and small-medium sized mammals and sporadically, in humans (de la Fuente et al, 2004b;Mihalca et al, 2012;Psaroulaki et al, 2006;Santos-Silva et al, 2011;Satta et al, 2011;Walker et al, 2000). R. bursa has been described as being involved in the transmission of agents of the genus Anaplasma (de la Fuente et al, 2004a), Babesia (Altay et al, 2008;M'Ghirbi et al, 2010) Theileria (Garcia-Sanmartin et al, 2008), Rickettsia (Boudebouch et al, 2009;de Sousa et al, 2006;Ioannou et al, 2011;Toledo et al, 2009) among others, with a known impact on animal health. The main objective of this study was to provide up-dated information regarding the currently circulating pathogens in R. bursa and their phylogenetic characterization, in Portugal Mainland, for the future development and planning of effective tick control measures.…”

Section: Introductionmentioning

confidence: 99%

Detection and phylogenetic characterization of Theileria spp. and Anaplasma marginale in Rhipicephalus bursa in Portugal

Ferrolho

Antunes

Santos

et al. 2016

Ticks and Tick-borne Diseases

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a b s t r a c tTicks are obligatory blood-sucking arthropod (Acari:Ixodida) ectoparasites of domestic and wild animals as well as humans. The incidence of tick-borne diseases is rising worldwide, challenging our approach toward diagnosis, treatment and control options. Rhipicephalus bursa Canestrini and Fanzago, 1877, a two-host tick widely distributed in the Palearctic Mediterranean region, is considered a multi-host tick that can be commonly found on sheep, goats and cattle, and occasionally on horses, dogs, deer and humans. R. bursa is a species involved in the transmission of several tick-borne pathogens with a known impact on animal health and production. The aim of this study was to estimate R. bursa prevalence in Portugal Mainland and circulating pathogens in order to contribute to a better knowledge of the impact of this tick species. Anaplasma marginale and Theileria spp. were detected and classified using phylogenetic analysis. This is the first report of Theileria annulata and Theileria equi detection in R. bursa ticks feeding on cattle and horses, respectively, in Portugal. This study contributes toward the identification of currently circulating pathogens in this tick species as a prerequisite for developing future effective anti-tick control measures.

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Section: Introductionmentioning

confidence: 99%

Detection and phylogenetic characterization of Theileria spp. and Anaplasma marginale in Rhipicephalus bursa in Portugal

Ferrolho

Antunes

Santos

et al. 2016

Ticks and Tick-borne Diseases

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“…mongolitimonae is an intracellular bacterium that belongs to the species R. sibirica (1). To date, only 11 cases of infection with this bacterium have been reported (2)(3)(4)(5)(6). We report a case in a pregnant woman with ocular vasculitis.…”

Section: Rickettsia Sibirica Subsp Mongolitimonae Infection and Retimentioning

confidence: 94%

Rickettsia sibiricasubsp.mongolitimonaeInfection and Retinal Vasculitis

Caron

Rolain

Mura

et al. 2008

Emerg. Infect. Dis.

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“…4 Nos últimos 20 anos têm surgido, por toda a Europa, novas espécies de Rickettsia, algumas das quais já descritas em Portugal. 10,13,14 Questiona-se se estas estirpes emergentes serão mais virulentas. 12 Por outro lado, a descrição recente e paralela de casos atípicos, 3,11 onde a escara e o exantema são características ausentes, 15 tornam o seu reconhecimento mais difícil para os clínicos, atrasando as medidas terapêuticas e comprometendo o seu desfecho.…”

Section: 2unclassified

Febre Escaro-Nodular: Revisão Retrospetiva de Casos Hospitalizados e Fatores Preditores de Doença Severa

2015

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Results:We reviewed 71 cases of Mediterranean spotted fever. The mean age was 63.3 ± 16.7 years and 52.1% were male. The eschar was observed in 62.0%. Fever and rash were the most common clinical findings. Forty five percent of patients developed complications and 22.5% were admitted to intermediate and/or intensive care units. Apyrexia, dyspnea, renal failure and elevated lactic dehydrogenase levels at admission were predictors of severe disease development (p < 0.034). Alcoholism was related with prolonged hospitalization (p = 0.020). Absence of fever (p = 0.019) and elevated serum creatinine levels (p = 0.028) were identified as independent factors associated with severe outcome. The mortality rate was 2.8%. Discussion: Although Mediterranean spotted fever is usually assumed to be benign, severe cases are emerging. Conclusion: Early identification of the infection and continuous patient surveillance are crucial, particularly in those with greater risk of developing severe or fatal disease.

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Rickettsia sibiricaIsolation from a Patient and Detection in Ticks, Portugal

Abstract: First R. sibirica–related strain is detected.

Cited by 100 publications

References 24 publications

Detection and phylogenetic characterization of Theileria spp. and Anaplasma marginale in Rhipicephalus bursa in Portugal

Detection and phylogenetic characterization of Theileria spp. and Anaplasma marginale in Rhipicephalus bursa in Portugal

Rickettsia sibiricasubsp.mongolitimonaeInfection and Retinal Vasculitis

Febre Escaro-Nodular: Revisão Retrospetiva de Casos Hospitalizados e Fatores Preditores de Doença Severa

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