Tick Borne Diseases
Mostrando 13-24 de 26 artigos, teses e dissertações.
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13. Coexistence of antibodies to tick-borne agents of babesiosis and Lyme borreliosis in patients from Cotia county, State of São Paulo, Brazil
This paper reports a case of coinfection caused by pathogens of Lyme disease and babesiosis in brothers. This was the first case of borreliosis in Brazil, acquired in Cotia County, State of São Paulo, Brazil. Both children had tick bite history, presented erythema migrans, fever, arthralgia, mialgia, and developed positive serology (ELISA and Western-blotti
Memórias do Instituto Oswaldo Cruz. Publicado em: 2003-04
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14. Development of an enzyme-linked immunosorbent assay for detection of IgM antibodies to Babesia bigemina in cattle
A crude antigenic preparation of Babesia bigemina was used to develop an ELISA for the detection of IgM antibodies. Optimal dilutions of the antigen, using positive and negative reference sera, were determined by checkerboard titrations. Negative sera from cattle imported from tick-free areas, serum samples collected from infected B. bigemina cattle were use
Memórias do Instituto Oswaldo Cruz. Publicado em: 2001-02
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15. The prevalence of serum antibodies to tick-borne infections in Mbale District, Uganda: The effect of agro-ecological zone, grazing management and age of cattle
Between August and October 2000, a cross-sectional study was conducted in smallholder dairy farms in Mbale District, Uganda to assess the prevalence of ticks and tick-borne diseases under different grazing systems and agro-ecological zones and understand the circumstances under which farmers operated. A questionnaire was administered to obtain information on
University of Arizona Library.
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16. Efficient use of a small genome to generate antigenic diversity in tick-borne ehrlichial pathogens
Ehrlichiae are responsible for important tick-transmitted diseases, including anaplasmosis, the most prevalent tick-borne infection of livestock worldwide, and the emerging human diseases monocytic and granulocytic ehrlichiosis. Antigenic variation of major surface proteins is a key feature of these pathogens that allows persistence in the mammalian hos
The National Academy of Sciences.
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17. Human granulocytic anaplasmosis: First reported case in Canada
Human granulocytic anaplasmosis (HGA) is a tick-borne rickettsial infection of peripheral blood neutrophils caused by Anaplasma phagocytophilum. While this infection is increasingly recognized as endemic throughout much of the United States, no Canadian cases have been previously described, despite the agent being identified in Canadian ticks. Herein we pres
Pulsus Group Inc.
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18. The shifting landscape of tick-borne zoonoses: tick-borne encephalitis and Lyme borreliosis in Europe.
The two major vector-borne diseases of northern temperate regions, tick-borne encephalitis (TBE) and Lyme borreliosis (LB), show very different epidemiological patterns, but both have increased significantly in incidence since the 1980s. Insight into the temporal dynamics of TBE, gained from statistical analysis of spatial patterns integrated with biological
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19. Human Exposure to a Granulocytic Ehrlichia and Other Tick-Borne Agents in Connecticut
Indirect fluorescent-antibody (IFA) staining methods with Ehrlichia equi (MRK or BDS strains) and Western blot analyses containing a human granulocytic ehrlichiosis (HGE) agent (NCH-1 strain) were used to confirm probable human cases of infection in Connecticut during 1995 and 1996. Also included were other tests for Ehrlichia chaffeensis, the agent of human
American Society for Microbiology.
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20. Detection of Anaplasma-marginale-infected tick vectors by using a cloned DNA probe.
Anaplasmosis is the most widely distributed of several important tick-borne diseases that constrain cattle production throughout much of the world. Evaluation of the effectiveness of disease control strategies that integrate vaccination with tick control requires the ability to monitor tick and cattle infection rates. To detect Anaplasma marginale in ticks a
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21. Diagnosis of Granulocytic Ehrlichiosis in Humans by Immunofluorescence Assay
Serodiagnostic tests are widely available for tick-borne diseases. We evaluated a cell-free antigen of the human granulocytic ehrlichiosis agent. Immunofluorescence assay (IFA) with this antigen is as efficient as with the MRL kit and allows a one-step IFA with other cell-free antigens that is useful when testing sera from patients bitten by ticks.
American Society for Microbiology.
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22. Pathogenesis and immune response of vaccinated and unvaccinated rhesus monkeys to tick-borne encephalitis virus.
The rhesus monkey was used as a model for diseases caused by viruses of the tick-borne encephalitis virus complex to study the efficacy and safety of a commercial killed vaccine. Animals infected intravenously developed a subclinical infection with no histopathological lesions but with transient clinical chemical changes that included elevated transaminase,
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23. Early effects of climate change: do they include changes in vector-borne disease?
The world's climate appears now to be changing at an unprecedented rate. Shifts in the distribution and behaviour of insect and bird species indicate that biological systems are already responding to this change. It is well established that climate is an important determinant of the spatial and temporal distribution of vectors and pathogens. In theory, a cha
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24. Human Granulocytic Ehrlichiosis Agent Infection in a Pony Vaccinated with a Borrelia burgdorferi Recombinant OspA Vaccine and Challenged by Exposure to Naturally Infected Ticks
A pony was vaccinated with recombinant OspA vaccine (rOspA) and then exposed 3 months later to Borrelia burgdorferi-infected ticks (Ixodes scapularis) collected in Westchester County, N.Y. At 2 weeks after tick exposure, the pony developed a high fever (105°F). Buffy coat smears showed that 20% of neutrophils contained ehrlichial inclusion bodies (morulae).
American Society for Microbiology.