Sökning: "tick-borne"

Visar resultat 11 - 15 av 58 avhandlingar innehållade ordet tick-borne.

  1. 11. Tick-borne encephalitis : on pathogenesis and prognosis

    Författare :Göran Günther; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Human; tick-borne encephalitis; viral; meningo-encephalitis; cerebrospinal fluid; PCR; cytokines; immunoglobulin; SPECT; technetium-99m-HMPAO;

    Sammanfattning : The general aim of the five studies presented in this thesis was to investigate the clinical outcome and prognosis and factors of importance for the pathogenesis of TBE compared to other aseptic meningo-encephalitis. In a prospective study 149 patients presenting with clinical symptoms of acute viral meningo-encephalitis between June 1991 and December 1993 were included. LÄS MER

  3. 12. Epidemiological aspects of tick borne diseases with focus on risk and prevention

    Författare :Louise Stjernberg; Pia Forsberg; Allmänmedicin och samhällsmedicin; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; epidemiologi; epidemiology; Folkhälsa; Public health; lyme borreliosis; prevention; risk; ticks; tick borne diseases; epidemiologi; epidemiology; Folkhälsa; Public health; lyme borreliosis; prevention; risk; ticks; tick borne diseases;

    Sammanfattning : The incidence and variety of diseases associated with ticks have increased world-wide and ticks are currently considered to be second only to mosquitoes as vectors of human infectious diseases in the world. In the northern hemisphere, Ixodes ricinus, the most common tick, transmits diseases caused by several infectious pathogens, including different types of bacteria, virus and protozoa. LÄS MER

  4. 13. Tick-borne encephalitis : prognosis, immunization and virus strain characterization

    Författare :Mats Haglund; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :tick-borne encephalitis; tick-borne encephalitis virus; human; clinical picture; sequelae; virus characterization; phylogeny; vaccination; neutralization;

    Sammanfattning : The aims were to investigate the morbidity associated with tick-borne encephalitis (TBE) both in the acute phase and at long-term follow-up, to develop a rapid neutralization test for confirmation of TBEV-specific antibody response and to study the serological response after TBE-vaccination and, finally, to characterize Swedish human TBEV isolates. The morbidity was studied in one retrospective follow-up study of consecutive TBE-patients, treated during a 10-year period (Paper 1) and in one prospective study of TBE-patients with aseptic meningoencephalitis of non-TBE etiology as a reference group (Paper II). LÄS MER

  5. 14. Emerging tick-borne pathogens: on the ecology of multiple infections in ticks and reservoir hosts

    Författare :Martin Andersson; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Borrelia afzelii; ’Candidatus Neoehrlichia mikurensis’; bank vole; Myodes glareolus; multiple infection; tick-borne diseases; vector-borne diseases; competition; facilitation; qPCR;

    Sammanfattning : Most animals will encounter several more or less severe infectious diseases during their lifetime, and simultaneous infections with more than one pathogen, or several different strains of the same pathogen, are common in natural populations. Ticks transmit a wide variety of different pathogens and can also be simultaneously infected with more than one pathogen. LÄS MER

  7. 15. The Origin of the Genus Flavivirus and the Ecology of Tick-Borne Pathogens

    Författare :John H.-O. Pettersson; Thomas Jaenson; Sven Bergström; Kenneth Nilsson; Mikael Thollesson; Per-Eric Lindgren; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Flavivirus; Virus dating; Molecular dating; Biogeography; Ixodes ricinus; Minimum infection rate; TBE; Tick-borne encephalitis virus; Rickettsia helvetica; Anaplasma phagocytophilum; Infection prevalence; RT-PCR; Biology with specialization in Systematics; Biologi med inriktning mot systematik;

    Sammanfattning : The present thesis examines questions related to the temporal origin of the Flavivirus genus and the ecology of tick-borne pathogens. In the first study, we date the origin and divergence time of the Flavivirus genus. It has been argued that the first flaviviruses originated after the last glacial maximum. LÄS MER