Publications by authors named "Mike McDonald"

Over the last two decades, vector-borne pathogens (VBPs) have changed their distribution across the globe as a consequence of a variety of environmental, socioeconomic and geopolitical factors. and are perfect exemplars of European VBPs of One Health concern that have undergone profound changes in their distribution, with new hotspots of infection appearing in previously non-endemic countries. Some areas, such as the United Kingdom, are still considered non-endemic.

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Article Synopsis
  • A protozoan parasite causing gastrointestinal disease in humans and animals has been under-researched in the UK, impacting our understanding of its effects.
  • Recent findings indicate that the parasite has an endemic presence in the UK, not just through travel, although the human infection sources remain mostly unclear.
  • A study improved testing methods and found various genotypes of the parasite in human and animal samples, highlighting domestic pets as potential carriers and stressing the importance of hygiene to prevent zoonotic transmission.
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Although the antibody response induced by primary vaccination with Fel-O-Vax FIV (three doses, 2-4 weeks apart) is well described, the antibody response induced by annual vaccination with Fel-O-Vax FIV (single dose every 12 months after primary vaccination) and how it compares to the primary antibody response has not been studied. Residual blood samples from a primary FIV vaccination study ( = 11), and blood samples from cats given an annual FIV vaccination ( = 10), were utilized. Samples from all 21 cats were tested with a commercially available PCR assay (FIV RealPCR), an anti-p24 microsphere immunoassay (MIA), an anti-FIV transmembrane (TM; gp40) peptide ELISA, and a range of commercially available point-of-care (PoC) FIV antibody kits.

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A field study undertaken in Australia compared the antibody responses induced in client-owned cats that had been vaccinated using two inactivated whole feline leukaemia virus (FeLV) vaccines, the monovalent vaccine Fel-O-Vax Lv-K and the polyvalent vaccine Fel-O-Vax 5. Serum samples from 428 FeLV-uninfected cats (118 FeLV-vaccinated and 310 FeLV-unvaccinated) were tested for anti-FeLV neutralising antibodies (NAb) using a live virus neutralisation assay to identify 378 FeLV-unexposed (NAb-negative) and 50 FeLV-exposed (NAb-positive; abortive infections) cats, following by anti-surface unit (SU) FeLV-A and FeLV-B antibody ELISA testing. An additional 42 FeLV-infected cats (28 presumptively regressively infected, 14 presumptively progressively infected) were also tested for anti-SU antibodies.

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A field study was undertaken to (i) measure the prevalence of feline leukaemia virus (FeLV) exposure and FeLV infection in a cross-section of healthy Australian pet cats; and (ii) investigate the outcomes following natural FeLV exposure in two Australian rescue facilities. Group 1 ( = 440) consisted of healthy client-owned cats with outdoor access, predominantly from eastern Australia. Groups 2 ( = 38) and 3 ( = 51) consisted of a mixture of healthy and sick cats, group-housed in two separate rescue facilities in Sydney, Australia, tested following identification of index cases of FeLV infection in cats sourced from these facilities.

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Background: In Ontario, Canada, approximately $2.5 billion is spent yearly on occupational injuries in the healthcare sector. The healthcare sector has been ranked second highest for lost-time injury rates among 16 Ontario sectors since 2009 with female healthcare workers ranked the highest among all occupations for lost-time claims.

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Feline coronavirus (FCoV) causes feline infectious peritonitis (FIP). Since 2002, when 20 cats on the Falkland Islands were found to be FCoV seronegative, only seronegative cats could be imported. Between 2005-2007, 95 pet and 10 feral cats tested negative by indirect immunofluorescence antibody (IFA) analysis using two strains of type II FCoV, two transmissible gastroenteritis virus assays, an enzyme-linked immunosorbent assay and rapid immunomigration test.

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In-vehicle information systems (IVIS) can be controlled by the user via direct or indirect input devices. In order to develop the next generation of usable IVIS, designers need to be able to evaluate and understand the usability issues associated with these two input types. The aim of this study was to investigate the effectiveness of a set of empirical usability evaluation methods for identifying important usability issues and distinguishing between the IVIS input devices.

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Article Synopsis
  • * In a phase III trial, patients with renal cancer received either MVA-5T4 or a placebo alongside other treatments, revealing that a strong immune response (5T4 antibody levels) corresponded to longer survival rates in those treated with MVA-5T4.
  • * An immune response surrogate (IRS) was created to predict treatment benefit and was validated not only in the main study but also in additional datasets for patients with other types of cancer, indicating its potential usefulness for future research and vaccine development.
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Usability must be defined specifically for the context of use of the particular system under investigation. This specific context of use should also be used to guide the definition of specific usability criteria and the selection of appropriate evaluation methods. There are four principles which can guide the selection of evaluation methods, relating to the information required in the evaluation, the stage at which to apply methods, the resources required and the people involved in the evaluation.

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Purpose: The TroVax Renal Immunotherapy Survival Trial was a randomized, placebo-controlled phase III study that investigated whether modified vaccinia Ankara encoding the tumor antigen 5T4 (MVA-5T4) prolonged survival of patients receiving first-line standard-of-care (SOC) treatment for metastatic renal cell cancer.

Experimental Design: Patients with metastatic clear cell renal cancer, prior nephrectomy, and good or intermediate prognosis were randomized 1:1 to receive up to 13 immunizations of MVA-5T4/placebo in combination with either sunitinib, interleukin-2 or interferon-α. The primary end point was overall survival.

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Recently, we demonstrated that endogenous feline leukemia virus (enFeLV) loads may vary among cats of different populations and that FeLV-infected cats have higher enFeLV loads than uninfected cats. Thus, we hypothesized that enFeLV might influence the pathogenesis and outcome of FeLV infection. No significant difference in the infection outcome (regressive versus progressive infection) was observed between groups of cats with high or low enFeLV loads following FeLV-A challenge.

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We discuss some historical features of the circadian in Drosophila melanogaster. We then describe some recent progress from our laboratory in three different areas. First, we discuss the regulation of circadian gene expression as assayed with microarrays.

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