Fiebre recurrente transmitida por garrapatas en área rural del sur de España / Tick-borne relapsing fever in a rural area of southern Spain

INTRODUCCIÓN: La fiebre recurrente transmitida por garrapatas (FRTG) es una enfermedad zoonótica producida por espiroquetas del género Borrelia. Es una enfermedad infradiagnosticada en nuestro medio debido al bajo índice de sospecha y a la dificultad en su diagnóstico. El objetivo del estudio es presentar nuestra experiencia en el manejo diagnóstico y terapéutico de la FRTG y revisar la literatura. MÉTODOS: Análisis retrospectivo de pacientes con FRTG ingresados en nuestro centro durante el periodo 2002-2012. Se analizan variables epidemiológicas, clínicas, microbiológicas, tratamiento y resultado. RESULTADO: Se identificaron 9 pacientes con FRTG. La mediana de edad fue de 11 años. Todos los casos ocurrieron durante meses cálidos. La clínica de presentación fue de episodios recurrentes de fiebre con escalofríos, cefalea, vómitos, mialgias y dolor abdominal. Se identificó afectación meníngea en 2 casos. En 2 pacientes existía infección por Borrelia en otros miembros de la familia en el momento del diagnóstico. La media de PCR fue de 187 mg/l y el 56% de casos presentaron trombocitopenia. Se visualizó Borrelia spp. en frotis de sangre periférica en el 67%. Todos los pacientes recibieron tratamiento antibiótico. Se empleó doxiciclina en mayores de 8 años y eritromicina y penicilina en menores de esta edad. Se produjo reacción de Jarisch- Herxheiner en un paciente. La evolución fue satisfactoria en todos los casos, sin secuelas. CONCLUSIONES: Subrayamos la importancia de mantener un elevado índice de sospecha de FRTG en regiones endémicas. El diagnóstico precoz, junto con el correcto tratamiento, permite evitar la aparición de recurrencias febriles y potenciales complicaciones

INTRODUCTION: Tick-borne relapsing fever (TBRF) is a zoonotic disease caused by spirochetes of the genus Borrelia. This disease is underdiagnosed in our area due to a low index of suspicion among clinicians, as well as its difficult diagnosis. This study aims to present our experience in the diagnosis and therapeutic management of TBRF and a literature review. METHODS: A retrospective medical chart review was carried out on children diagnosed of TBRF from 2002 to 2012 in our hospital, and included clinical, epidemiological, microbiological, treatment, and outcome data. RESULTS: Nine children with TBRF were identified. Median age was 11 years. All cases occurred during warm months. The most frequent presenting clinical findings were fever, chills, headache, vomiting, myalgia and abdominal pain. Meningeal involvement was identified in 2 cases. In the case of 2 patients, Borrelia infection was identified in several relatives at the time of diagnosis. Mean C-protein reactive was 187 mg/L, and low platelet counts were observed in 56% of the cases. Borrelia spp. was visualized in peripheral blood smears in 67% of cases. All of the patients received antibiotic treatment. Doxycycline was used in children older than 8 years and erythromycin and penicillin in the younger ones. Jarisch-Herxheiner reaction occurred in one patient. All cases resolved without sequelae. CONCLUSIONS: We emphasize the importance of maintaining a high level of suspicion in endemic regions of TBRF. Early diagnosis and a correct therapy can prevent the appearance of subsequent fever recurrences and potential complications

Tick-borne encephalopathies : epidemiology, diagnosis, treatment and prevention.

Tick-borne encephalopathies constitute a broad range of infectious diseases affecting the brain and other parts of the CNS. The causative agents are both viral and bacterial. This review focuses on the current most important tick-borne human diseases: tick-borne encephalitis (TBE; including Powassan encephalitis) and Lyme borreliosis. Rocky Mountain spotted fever (RMSF) and Colorado tick fever (CTF), less common tick-borne diseases associated with encephalopathy, are also discussed. TBE is the most important flaviviral infection of the CNS in Europe and Russia, with 10 000-12 000 people diagnosed annually. The lethality of TBE in Europe is 0.5% and a post-encephalitic syndrome is seen in over 40% of affected patients, often producing a pronounced impairment in quality of life. There is no specific treatment for TBE. Two vaccines are available to prevent infection. Although these have a good protection rate and good efficacy, there are few data on long-term immunity. Lyme borreliosis is the most prevalent tick-borne disease in Europe and North America, with >50 000 cases annually. Localised early disease can be treated with oral phenoxymethylpenicillin (penicillin V), doxycycline or amoxicillin. The later manifestations of meningitis, arthritis or acrodermatitis can be treated with oral doxycycline, oral amoxicillin or intravenous ceftriaxone; intravenous benzylpenicillin (penicillin G) or cefotaxime can be used as alternatives. The current use of vaccines against Lyme borreliosis in North America is under discussion, as the LYMErix vaccine has been withdrawn from the market because of possible adverse effects, for example, arthritis. RMSF and CTF appear only in North America. RMSF is an important rickettsial disease and is effectively treated with doxycycline. There is no treatment or preventative measure available for CTF.

[Neurologic problems in tick-borne diseases--clinical and diagnostic aspects]. / Problemy neurologiczne w chorobach przenoszonych przez kleszcze--aspekty kliniczne i diagnostyczne.

Tick carried illnesses frequently lead towards neurological complications. The tick-borne encephalitis and borreliosis are the most frequently encountered illnesses having such aetiopathogenesis. In the study there are presented clinical aspects of tick-borne encephalitis and borreliosis with special consideration of various neurological symptomatology. Simultaneously there are discussed current diagnostic rules of the diseases, mainly on the basis of serologic investigation.