Sökning: "ticks"
Visar resultat 11 - 15 av 40 avhandlingar innehållade ordet ticks.
11. Emerging tick-borne pathogens: on the ecology of multiple infections in ticks and reservoir hosts
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
12. A STING from a Tick : Epidemiology, Ecology and Clinical Aspects of Lyme Borreliosis
Sammanfattning : Lyme borreliosis (LB) is the most common tick-borne disease in the Northern Hemisphere and the number of LB cases is increasing. The infection is caused by spirochetes belonging to the Borrelia burgdorferi sensu lato complex, and is, in Europe, transmitted to humans by Ixodes ricinus ticks. LÄS MER
13. Epidemiological and Ecological Studies of Tick-borne Encephalitis Virus
Sammanfattning : Ticks are blood-sucking parasites that are an inconvenience for both humans and animals. The tick by itself is normally harmless unless they attack in excessive numbers. LÄS MER
14. Host-seeking activity of Ixodes ricinus in relation to the epidemiology of Lyme borreliosis in Sweden
Sammanfattning : This thesis examines seasonal, diel and vertical distribution patterns of activity of host-seeking Ixodes ricinus (L.) ticks at three localities in south-central Sweden. In addition, by examining the prevalence of infection in ticks with Lyme borreliosis (LB) spirochetes, Borrelia burgdorferi s. LÄS MER
15. The Origin of the Genus Flavivirus and the Ecology of Tick-Borne Pathogens
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