935 results match your criteria Boutonneuse Fever

Recent advances in understanding tick and rickettsiae interactions.

Parasite Immunol 2021 May 15;43(5):e12830. Epub 2021 Apr 15.

Center for Molecular and Cellular Biosciences, School of Biological. Environmental, and Earth Sciences, University of Southern Mississippi, Hattiesburg, MS, USA.

Ticks are haematophagous arthropods with unique molecular mechanisms for digesting host blood meal while acting as vectors for various pathogens of public health significance. The tick's pharmacologically active saliva plays a fundamental role in modulating the host's immune system for several days to weeks, depending on the tick species. The vector tick has also developed sophisticated molecular mechanisms to serve as a competent vector for pathogens, including the spotted fever group (SFG) rickettsiae. Read More

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Mediterranean spotted fever associated with leucocytoclastic vasculitis and acute pancraeatitis.

BMJ Case Rep 2021 Feb 23;14(2). Epub 2021 Feb 23.

Laniado Hospital, Sanz Medical Centre, Netanya, Israel.

A young healthy gardener became febrile with abdominal pain, nausea, vomiting and diarrhoea followed by palpable purpura, mostly on the legs and buttocks with associated arthralgia. Dehydration, azotemia and hyponatraemia resolved with fluid replacement. Tests demonstrated acute pancreatitis, hepatitis, thrombocytopenia, microscopic haematuria and proteinuria. Read More

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February 2021

Mediterranean spotted fever in child and adult patients: investigation from an endemic region in Bulgaria.

Cent Eur J Public Health 2020 Sep;28(3):187-192

Medical University, Plovdiv, Bulgaria.

Objectives: Mediterranean spotted fever (MSF) is a tick-borne endemic disease caused by Rickettsia conorii conorii and transmitted to humans by the brown dog tick Rhipicephalus sanguineus. It is characterized by fever, maculopapular rash and a tick bite skin lesion "tache noire". The disease affects all age groups and usually has mild to moderate course. Read More

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September 2020

Survival of Rickettsia conorii in artificially contaminated whole and leukoreduced canine blood units during the storage period.

Parasit Vectors 2020 Apr 21;13(1):118. Epub 2020 Apr 21.

Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, PD, Italy.

Background: The ability of tick-borne agents to survive in stored blood bags is a key factor for their transmissibility by blood transfusion. The aim of this study was to evaluate the survival and potential infectivity of Rickettsia conorii (RC) in artificially contaminated canine whole blood (WB) and in leukoreduced whole blood (LR-WB) during the storage period.

Methods: RC was cultured on L929 cells. Read More

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Quantitative Proteomics of the Endothelial Secretome Identifies RC0497 as Diagnostic of Acute Rickettsial Spotted Fever Infections.

Am J Pathol 2020 02 16;190(2):306-322. Epub 2020 Jan 16.

Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas; Institute for Translational Sciences, University of Texas Medical Branch, Galveston, Texas; Sealy Center for Molecular Medicine, University of Texas Medical Branch, Galveston, Texas. Electronic address:

Mediterranean spotted fever is a reemerging acute tick-borne infection produced by the α-proteobacterium, Rickettsia conorii. Rickettsia conorii infects vascular endothelial cells producing disseminated plasma leakage, manifesting as nonspecific fever, headache, and maculopapular rash. Because there are no available tests of early infection, Mediterranean spotted fever is often undiagnosed and untreated, resulting in significant mortality. Read More

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February 2020

Spatial and temporal trends of Mediterranean spotted fever in Spain, 2005-2015.

Ticks Tick Borne Dis 2020 03 3;11(2):101353. Epub 2019 Dec 3.

Consortium for Biomedical Research in Epidemiology and Public Health (CIBER en Epidemiología y Salud Pública CIBERESP), Spain; National Centre for Epidemiology, Instituto de Salud Carlos III, Calle De Melchor Fernández Almagro, 5, 28029, Madrid, Spain.

Background: Mediterranean spotted fever (MSF) is a zoonotic disease caused by Rickettsia conorii and transmitted by Rhipicephalus sanguineus sensu lato. The aim of this study is to understand the epidemiology and trends regarding the disease in Spain, based on notifications to the Spanish National Epidemiology Surveillance Network (RENAVE) and the National Hospital Discharge Database (CMBD) between 2005 and 2015.

Methods: We carried out a retrospective cross-sectional study of the cases and the outbreaks reported to the RENAVE and of those found in the CMBD between January 1, 2005 and December 31, 2015. Read More

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South African Tick Bite Fever: An Overview.

Dermatopathology (Basel) 2019 Apr-Jun;6(2):70-76. Epub 2019 Jun 26.

School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.

The rickettsiae are a diverse group of vector-borne zoonotic bacterial pathogens. The two common spotted fever diseases in existence in southern Africa are boutonneuse fever-like tick bite fever (TBF), caused by , and African TBF, caused by . This review addresses demographic, epidemiological, clinical, diagnostic, therapeutic, and preventive aspects of TBF in the southern African context, including a discussion of the dermatopathological findings and potential diagnostic pitfalls. Read More

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[Fever and eruption in 2 neighbors].

Aten Primaria 2020 05 19;52(5):355-356. Epub 2019 Sep 19.

Centro de Salud Calahorra, Calahorra, La Rioja, España.

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Rickettsial infections of the central nervous system.

PLoS Negl Trop Dis 2019 08 29;13(8):e0007469. Epub 2019 Aug 29.

Aix-Marseille Univ, IRD, AP-HM, SSA, VITROME, IHU Mediterranée-Infection, Marseille, France.

As a result of migrations and globalization, people may face a possible increase in the incidence of central nervous system rickettsial infections (CNS R). These diseases, caused by Rickettsia species and transmitted to humans by arthropod bites, are putatively lethal. However, the diagnosis of CNS R is challenging and often delayed due to their nonspecific clinical presentation and the strict intracellular nature of rickettsiae. Read More

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Seroprevalences of Rickettsia conorii, Ehrlichia canis and Coxiella burnetii in Dogs from Montenegro.

Acta Parasitol 2019 Dec 6;64(4):769-778. Epub 2019 Dec 6.

Department of Infectious Animal Diseases and Bee Diseases, Faculty of Veterinary Medicine, University of Belgrade, Belgrade, Serbia.

Purpose: The incidence of vector-borne zoonoses has been increasing in Europe as a result of global climate change, and rickettsioses are a significant etiologic entity among these infections. The objective of this study was to investigate the seroprevalences of Rickettsia conorii, Ehrlichia canis and Coxiella burnetii in dogs in Montenegro.

Methods: The seroepidemiological study covered 259 dogs, of which 155 were owned dogs suspected of infection with agents of rickettsial aetiology from the continental (Podgorica) or five coastal municipalities of Montenegro (Budva, Herceg Novi, Kotor, Ulcinj and Bar), and 104 dogs were from a public shelter in Podgorica. Read More

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December 2019

[Retrospective serological diagnostics of spotted fever group rickettsioses in high risk areas of Rickettsia conorii subsp. Caspia infection.]

Klin Lab Diagn 2019 ;64(6):354-359

N.F. Gamaleya National Research Center for Epidemiology and Microbiology, 123098, Moscow, Russia.

723 blood sera from 537 patients of Regional Infectious Clinical Hospital, Astrakhan were obtained during high activity period of Rhipicephalus ticks (May-September 2015) and retrospectively studied for IgG/IgM to antigen of spotted fever group (SFG) Rickettsia. IgG and/or IgM to Rickettsia conorii were detected in 145 sera from 130 patients, and antibodies to R. sibirica (group-specific) were detected in 143 sera from 145. Read More

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Mediterranean spotted fever in the elderly: a prospective cohort study.

Eur J Clin Microbiol Infect Dis 2019 Jul 11;38(7):1333-1337. Epub 2019 Apr 11.

Infectious Diseases Unit, Internal Medicine Service, Hospital de Terrassa (Consorci Sanitari de Terrassa), Ctra. Torrebonica s/n, 08227, Terrassa, Spain.

The objective of this study is to evaluate the characteristics and outcome of elderly patients with Mediterranean spotted fever (MSF). This study was a prospective observational cohort study of all adult cases with confirmed MSF treated in a teaching hospital (1984-2015) to compare the characteristics of elderly patients (> 65 years) with younger adults. We identified 263 adult patients with MSF, and 53 (20. Read More

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Risk factors for bacterial zoonotic pathogens in acutely febrile patients in Mpumalanga Province, South Africa.

Zoonoses Public Health 2019 08 11;66(5):458-469. Epub 2019 Mar 11.

Division of Public Health Surveillance and Response, Division of the National Health Laboratory Service, National Institute for Communicable Diseases, Johannesburg, South Africa.

Endemic zoonoses, such as Q fever and spotted fever group (SFG) rickettsiosis, are prevalent in South Africa, yet often undiagnosed. In this study, we reviewed the demographics and animal exposure history of patients presenting with acute febrile illness to community health clinics in Mpumalanga Province to identify trends and risk factors associated with exposure to Coxiella burnetii, the causative agent of Q fever, and infection by SFG Rickettsia spp. Clinical and serological data and questionnaires elucidating exposure to animals and their products were obtained from 141 acutely febrile patients between 2012 and 2016. Read More

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Global Transcriptomic Profiling of Pulmonary Gene Expression in an Experimental Murine Model of Infection.

Genes (Basel) 2019 03 8;10(3). Epub 2019 Mar 8.

Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA.

Mediterranean spotted fever develops from an infection with , an obligate intracellular, Gram-negative, endotheliotropic, and tick-transmitted bacterial pathogen, and is an acute, febrile illness that can progress to life-threatening complications if not diagnosed and treated early with effective antibiotics. Despite significant morbidity and mortality, little is known about changes in gene expression that determine the host responses during in vivo infection. We have investigated the transcriptional landscape of host lungs as a prominently affected organ system in an established murine model of infection by RNA-sequencing. Read More

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[Macular atrophy secondary to bilateral involvement in Mediterranean spotted fever].

J Fr Ophtalmol 2019 Feb 22;42(2):e47-e50. Epub 2019 Jan 22.

Service d'ophtalmologie, hôpital Militaire d'Instruction Mohamed V, 10010 Rabat, Maroc.

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February 2019

[Mediterranean spotted fever in a 3-year-old boy treated with doxycycline].

An Pediatr (Engl Ed) 2020 Apr 17;92(4):247-248. Epub 2019 Jan 17.

Servicio de Dermatología, Consorcio Hospital General Universitario de Valencia, Valencia, España.

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Spotted fever rickettsioses causing myocarditis and ARDS: a case from Sri Lanka.

BMC Infect Dis 2018 Dec 29;18(1):705. Epub 2018 Dec 29.

Department of General Medicine, General Hospital (Teaching), Kandy, Sri Lanka.

Background: Spotted fever group of rickettsial infections are emerging in Sri Lanka. We describe a patient with rapidly progressing ARDS and myocarditis secondary to spotted fever caused by Rickettsia conorii. ARDS and myocarditis are rare complications of Rickettsia conorii infections and only a few cases are reported to date. Read More

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December 2018

[A Rickettsia case caused by Rickettsia conorii].

Mikrobiyol Bul 2018 Oct;52(4):431-438

Ministry of Health, General Directorate of Public Health, Microbiology Reference Laboratory, Ankara, Turkey.

Rickettsia species are gram-negative intracellular, small pleomorphic coccobacilli in the Rickettsiaceae family. This genus is serologically and genotypically divided into four groups as spotted fever group, typhus group, Rickettsia belli and Rickettsia canadensis. Rickettsia conorii (R. Read More

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October 2018

Unusual Maculopapular Rash on the Scalp of a Patient with Mediterranean Spotted Fever.

Med Princ Pract 2019 3;28(3):291-293. Epub 2018 Dec 3.

Department of Infectious Diseases, Parasitology and Tropical Medicine, Faculty of Medicine, Medical University of Plovdiv, and Clinic of Infectious Diseases, St. George University Hospital, Plovdiv, Bulgaria.

Objective: To report a rare case of maculopapular rash on the scalp in a patient with Mediterranean spotted fever (MSF).

Clinical Presentation And Intervention: A 58-year-old woman with breast cancer and chemotherapy-induced alopecia contracted MSF. Her clinical features were typical, except for a maculopapular rash covering the scalp. Read More

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Ocular manifestations of in South India.

Indian J Ophthalmol 2018 Dec;66(12):1840-1844

Resident, Aravind Eye Hospital and Postgraduate Institute of Ophthalmology, Salem, Tamil Nadu, India.

Purpose: Among the major groups of rickettsiosis, the commonly reported diseases in India are: (a) Typhus group induced-scrub typhus, murine flea-borne typhus; (b) Spotted fever group induced-Indian tick typhus; and (c) Q fever. Though many scrub typhus outbreaks have been reported from India, only one outbreak of spotted fever-serologically proven Indian tick typhus (Rickettsia conorii)-has been reported. We report for the first time ocular manifestations of serologically proven R. Read More

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December 2018

Tick- and flea-borne rickettsioses in Tizi-Ouzou, Algeria: Implications for travel medicine.

Travel Med Infect Dis 2018 Nov - Dec;26:51-57. Epub 2018 Nov 9.

Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, IHU-Méditerranée Infection, Marseille, France. Electronic address:

Background: In Algeria, Mediterranean spotted fever (MSF), caused by Rickettsia conorii conorii and transmitted by Rhipicephalus sanguineus, is endemic. However, the documentation of cases is rare due to a lack of laboratory facilities. Our aim was to screen for rickettsioses in patients with fever, rash and a possible inoculation eschar. Read More

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January 2019

Mediterranean spotted fever rickettsiosis in Italy, 2001-2015: Spatio-temporal distribution based on hospitalization records.

Ticks Tick Borne Dis 2019 01 3;10(1):43-50. Epub 2018 Sep 3.

Department of Infectious Diseases, Istituto Superiore di Sanità, Rome, Italy.

The Mediterranean spotted fever (MSF) rickettsiosis is the predominant rickettsial disease among the spotted fever group (SFG) rickettsiae in the Mediterranean countries and North Africa. Its causative agent is Rickettsia conorii, although, SFG rickettsiosis - cases due to Rickettsia monacensis, Rickettsia massiliae and Rickettsia aeschlimannii were also described. A retrospective study based on hospital discharge records with a diagnosis of SFG rickettsiosis was carried out to describe the spatial pattern, the trend of the disease, and the epidemiological characteristics of persons hospitalized in the period 2001-2015. Read More

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January 2019

Prospective Cohort Study of Single-Day Doxycycline Therapy for Mediterranean Spotted Fever.

Antimicrob Agents Chemother 2018 11 24;62(11). Epub 2018 Oct 24.

Infectious Diseases Unit, Internal Medicine Service, Hospital de Terrassa (Consorci Sanitari de Terrassa), Terrassa, Spain.

The objective of this study is to evaluate the results of single-day doxycycline therapy for Mediterranean spotted fever (MSF). This is a prospective cohort study of cases with confirmed MSF treated with the single-day doxycycline regimen in a teaching hospital from 1990 to 2015. Patients received two oral doses of 200 mg of doxycycline for 1 day. Read More

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November 2018

[A complicated clinical course of tick-borne rickettsiosis after safari in South Africa].

Dtsch Med Wochenschr 2018 08 30;143(15):1116-1119. Epub 2018 Jul 30.

IV. Medizinische Klinik und Poliklinik der LMU, München.

History: A healthy 41 year old man was bitten by a tick while on safari in the Kruger National Park in South Africa. He developed severe fever and malaise 5 days later. A characteristic red skin sore with a dark centre and surrounding erythema (eschar, tache noir) developed at the site of the tick bite. Read More

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[Haemophagocytic syndrome secondary to Mediterranean spotted fever].

Ann Dermatol Venereol 2018 Aug - Sep;145(8-9):516-520. Epub 2018 Jul 10.

Département de dermatologie, CHU St-Éloi, 80, avenue Augustin-Fliche, 34090 Montpellier, France.

Introduction: Haemophagocytic syndrome (HS) is a rare disease with a severe prognosis that is defined by clinical, laboratory and histopathological criteria. Infections represent the classical cause of HS. HS secondary to Mediterranean spotted fever (MSF) is rare with only a few cases being reported in the literature. Read More

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February 2019

Mediterranean Spotted Fever in Children: Study of a Portuguese Endemic Region.

Acta Med Port 2018 Apr 30;31(4):196-200. Epub 2018 Apr 30.

Pediatric Department. Centro Hospitalar de Trás-os-Montes e Alto Douro. Vila Real, Portugal.

Introduction: Mediterranean spotted fever is an infectious disease included in the human rickettsiosis group, with its main distribution in the Mediterranean and South European countries. It is an endemic disease in Portugal, with dogs acting as the main domestic reservoir. Children are a particularly vulnerable group due to their close contact with household animals and by frequently playing outdoors. Read More

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Rare presentation of rickettsial infection as purpura fulminans: a case report.

J Med Case Rep 2018 May 26;12(1):145. Epub 2018 May 26.

Department of Medicine, University of Peradeniya, Peradeniya, Sri Lanka.

Background: Purpura fulminans is an acute life-threatening disorder characterized by intravascular thrombosis and hemorrhagic infarction of the skin complicated with disseminated intravascular coagulation. It is commonly seen in acute infections following meningococcal and streptococcal infections. Few cases of purpura fulminans following rickettsial infections have been described in the literature. Read More

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Ocular manifestations of rickettsia in children: common but frequently overlooked.

BMJ Case Rep 2018 May 18;2018. Epub 2018 May 18.

Ophthalmology Department, Centro Hospitalar Tondela-Viseu, Viseu, Portugal.

We review two cases of ocular manifestations of infection in children. A girl who presented unilateral visual loss with focal retinitis and macular oedema and a boy with unilateral central scotoma and bilateral anterior uveitis. Progressive functional and anatomic recovery was observed after oral antibiotics and steroids were initiated. Read More

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[Intraocular manifestations of Rickettsia conorii infection: A case report].

J Fr Ophtalmol 2018 May;41(5):e231-e234

Service d'ophtalmologie, CHU Nord, chemin des Bourrely, 13015 Marseille, France.

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