Nicholas H Ogden

Summary

Affiliation: Public Health Agency of Canada
Country: Canada

Publications

  1. ncbi Active and passive surveillance and phylogenetic analysis of Borrelia burgdorferi elucidate the process of Lyme disease risk emergence in Canada
    Nicholas H Ogden
    Centre for Food borne, Environmental and Zoonotic Infectious Diseases, Public Health Agency of Canada, Saint Hyacinthe, Quebec, Canada
    Environ Health Perspect 118:909-14. 2010
  2. ncbi Projected effects of climate change on tick phenology and fitness of pathogens transmitted by the North American tick Ixodes scapularis
    N H Ogden
    Public Health Agency of Canada, Centre for Foodborne, Environmental and Zoonotic Infectious Diseases, Faculte de Medecine Veterinaire, Universite de Montreal, C P 5000, Saint Hyacinthe, QC J2S7C6, Canada
    J Theor Biol 254:621-32. 2008
  3. ncbi Role of migratory birds in introduction and range expansion of Ixodes scapularis ticks and of Borrelia burgdorferi and Anaplasma phagocytophilum in Canada
    N H Ogden
    Foodborne, Waterborne and Zoonotic Infections Division, Public Health Agency of Canada, Ottawa, Ontario, Canada
    Appl Environ Microbiol 74:1780-90. 2008
  4. ncbi Vector seasonality, host infection dynamics and fitness of pathogens transmitted by the tick Ixodes scapularis
    N H Ogden
    Faculte de Medecine Veterinaire, Universite de Montreal, C P 5000, Saint Hyacinthe, QC, J2S 7C6, Canada
    Parasitology 134:209-27. 2007
  5. ncbi Risk maps for range expansion of the Lyme disease vector, Ixodes scapularis, in Canada now and with climate change
    Nicholas H Ogden
    Centre for Food borne, Environmental and Zoonotic Infectious Diseases, Public Health Agency of Canada, Saint Hyacinthe, Quebec, Canada
    Int J Health Geogr 7:24. 2008
  6. ncbi Climate change and the potential for range expansion of the Lyme disease vector Ixodes scapularis in Canada
    N H Ogden
    Groupe de Recherche en Epidémiologie des Zoonoses et Santé Publique, Faculte de Medecine Veterinaire, Universite de Montreal, Que, Canada
    Int J Parasitol 36:63-70. 2006
  7. ncbi The rising challenge of Lyme borreliosis in Canada
    N H Ogden
    Foodborne, Waterborne and Zoonotic Infections Division, Public Health Agency of Canada, St-Hyacinthe, Quebec, Canada
    Can Commun Dis Rep 34:1-19. 2008
  8. ncbi Ixodes scapularis ticks collected by passive surveillance in Canada: analysis of geographic distribution and infection with Lyme borreliosis agent Borrelia burgdorferi
    N H Ogden
    Groupe de Recherche en Epidémiologie des Zoonoses et Santé Publique, Universite de Montreal, Quebec, Canada J2S 7C6
    J Med Entomol 43:600-9. 2006
  9. ncbi A dynamic population model to investigate effects of climate on geographic range and seasonality of the tick Ixodes scapularis
    N H Ogden
    Groupe de Recherche en Epidémiologie des Zoonoses et Santé Publique, Departement de Pathologie et Microbiologie, Faculte de Medecine Veterinaire, Universite de Montreal, CP 5000, Saint Hyacinthe, Que, Canada J2S 7C6
    Int J Parasitol 35:375-89. 2005
  10. ncbi Investigation of ground level and remote-sensed data for habitat classification and prediction of survival of Ixodes scapularis in habitats of southeastern Canada
    N H Ogden
    , , , Que, Canada
    J Med Entomol 43:403-14. 2006

Detail Information

Publications21

  1. ncbi Active and passive surveillance and phylogenetic analysis of Borrelia burgdorferi elucidate the process of Lyme disease risk emergence in Canada
    Nicholas H Ogden
    Centre for Food borne, Environmental and Zoonotic Infectious Diseases, Public Health Agency of Canada, Saint Hyacinthe, Quebec, Canada
    Environ Health Perspect 118:909-14. 2010
    ..Northward expansion of the tick Ixodes scapularis is driving Lyme disease (LD) emergence in Canada. Information on mechanisms involved is needed to enhance surveillance and identify where LD risk is emerging...
  2. ncbi Projected effects of climate change on tick phenology and fitness of pathogens transmitted by the North American tick Ixodes scapularis
    N H Ogden
    Public Health Agency of Canada, Centre for Foodborne, Environmental and Zoonotic Infectious Diseases, Faculte de Medecine Veterinaire, Universite de Montreal, C P 5000, Saint Hyacinthe, QC J2S7C6, Canada
    J Theor Biol 254:621-32. 2008
    ..Therefore, climate change may affect the frequency and distribution of I. scapularis-borne pathogens and alter their evolutionary trajectories...
  3. ncbi Role of migratory birds in introduction and range expansion of Ixodes scapularis ticks and of Borrelia burgdorferi and Anaplasma phagocytophilum in Canada
    N H Ogden
    Foodborne, Waterborne and Zoonotic Infections Division, Public Health Agency of Canada, Ottawa, Ontario, Canada
    Appl Environ Microbiol 74:1780-90. 2008
    ..However, infrequent larvae and the low infection prevalence in ticks carried by the birds raise questions as to how B. burgdorferi and A. phagocytophilum become endemic in any tick populations established by bird-transported ticks...
  4. ncbi Vector seasonality, host infection dynamics and fitness of pathogens transmitted by the tick Ixodes scapularis
    N H Ogden
    Faculte de Medecine Veterinaire, Universite de Montreal, C P 5000, Saint Hyacinthe, QC, J2S 7C6, Canada
    Parasitology 134:209-27. 2007
    ..scapularis-borne microparasites in northeastern North America due to abiotic forcings influencing I. scapularis seasonality...
  5. ncbi Risk maps for range expansion of the Lyme disease vector, Ixodes scapularis, in Canada now and with climate change
    Nicholas H Ogden
    Centre for Food borne, Environmental and Zoonotic Infectious Diseases, Public Health Agency of Canada, Saint Hyacinthe, Quebec, Canada
    Int J Health Geogr 7:24. 2008
    ..scapularis. Risk maps will help to meet the public health challenge of Lyme disease by allowing targeting of surveillance and intervention activities...
  6. ncbi Climate change and the potential for range expansion of the Lyme disease vector Ixodes scapularis in Canada
    N H Ogden
    Groupe de Recherche en Epidémiologie des Zoonoses et Santé Publique, Faculte de Medecine Veterinaire, Universite de Montreal, Que, Canada
    Int J Parasitol 36:63-70. 2006
    ..The geographic range of I. scapularis-borne zoonoses may, therefore, expand significantly northwards as a consequence of climate change this century...
  7. ncbi The rising challenge of Lyme borreliosis in Canada
    N H Ogden
    Foodborne, Waterborne and Zoonotic Infections Division, Public Health Agency of Canada, St-Hyacinthe, Quebec, Canada
    Can Commun Dis Rep 34:1-19. 2008
  8. ncbi Ixodes scapularis ticks collected by passive surveillance in Canada: analysis of geographic distribution and infection with Lyme borreliosis agent Borrelia burgdorferi
    N H Ogden
    Groupe de Recherche en Epidémiologie des Zoonoses et Santé Publique, Universite de Montreal, Quebec, Canada J2S 7C6
    J Med Entomol 43:600-9. 2006
    ..The risk of Lyme borreliosis in Canada may therefore be mostly low but more geographically widespread than previously suspected...
  9. ncbi A dynamic population model to investigate effects of climate on geographic range and seasonality of the tick Ixodes scapularis
    N H Ogden
    Groupe de Recherche en Epidémiologie des Zoonoses et Santé Publique, Departement de Pathologie et Microbiologie, Faculte de Medecine Veterinaire, Universite de Montreal, CP 5000, Saint Hyacinthe, Que, Canada J2S 7C6
    Int J Parasitol 35:375-89. 2005
    ..scapularis, implying that there is potential for spread. Future applications of the model in investigating climate change effects on I. scapularis are discussed...
  10. ncbi Investigation of ground level and remote-sensed data for habitat classification and prediction of survival of Ixodes scapularis in habitats of southeastern Canada
    N H Ogden
    , , , Que, Canada
    J Med Entomol 43:403-14. 2006
    ..scapularis populations could establish in more northerly woodland types than those in which they currently exist. Suitable habitats may be detected by ground-level habitat classification, and remote-sensed data may assist this process...
  11. ncbi Investigation of relationships between temperature and developmental rates of tick Ixodes scapularis (Acari: Ixodidae) in the laboratory and field
    N H Ogden
    Groupe de Recherche en Epidémiologie et Santé Publique, Faculte de Medecine Veterinaire, Universite de Montreal, Quebec, Canada
    J Med Entomol 41:622-33. 2004
    ..The significance of these findings for understanding current and future distributions of I. scapularis, and of the pathogens it transmits, is discussed...
  12. ncbi Risk factors for tick attachment to smallholder dairy cattle in Tanzania
    N H Ogden
    Groupe de Recherche en Epidémiologie et Santé Publique, Departement de Pathologie et Microbiologie, Faculte de Medecine Veterinaire, Université de Montréal C P 5000, Saint Hyacinthe, Que J2S 7C6, Canada
    Prev Vet Med 67:157-70. 2005
    ..The odds that animals carried ticks varied amongst the agro-ecological zones (AEZs) and administrative districts where the farms were situated-but there was still considerable residual variation in tick infestation at the farm level...
  13. ncbi Natural Ehrlichia phagocytophila transmission coefficients from sheep 'carriers' to Ixodes ricinus ticks vary with the numbers of feeding ticks
    N H Ogden
    Department of Veterinary Preclinical Science, University of Liverpool, Faculty of Veterinary Science, UK
    Parasitology 124:127-36. 2002
    ..These findings suggest that variation in the numbers of ticks feeding per sheep may influence E. phagocytophila transmission by direct effects on transmission at the tick-host interface...
  14. ncbi IgG responses to salivary gland extract of Ixodes ricinus ticks vary inversely with resistance in naturally exposed sheep
    N H Ogden
    Department of Veterinary Preclinical Science, University of Liverpool, UK
    Med Vet Entomol 16:186-92. 2002
    ..Potential consequences for the epidemiology of tick-borne diseases are discussed...
  15. ncbi Sympatric Ixodes trianguliceps and Ixodes ricinus ticks feeding on field voles (Microtus agrestis): potential for increased risk of Anaplasma phagocytophilum in the United Kingdom?
    K J Bown
    Department of Veterinary Pathology, University of Liverpool, Liverpool, UK
    Vector Borne Zoonotic Dis 6:404-10. 2006
    ..trianguliceps, which may alone maintain endemic cycles, and exophilic I. ricinus ticks, which could act as a bridge vector and transmit infections to humans and domesticated animals...
  16. ncbi Transmission of Anaplasma phagocytophilum to Ixodes ricinus ticks from sheep in the acute and post-acute phases of infection
    N H Ogden
    Department of Veterinary Preclinical Sciences, University of Liverpool, Liverpool L69 7ZJ, UK
    Infect Immun 71:2071-8. 2003
    ....
  17. ncbi Groupings of highly similar major surface protein (p44)-encoding paralogues: a potential index of genetic diversity amongst isolates of Anaplasma phagocytophilum
    A N J Casey
    Department of Veterinary Preclinical Science, University of Liverpool, Brownlow Hill and Crown Street, Liverpool L69 7ZJ, UK
    Microbiology 150:727-34. 2004
    ..phagocytophilum to specific reservoir hosts in different geographical locations, and any associations with infectivity for different species including humans...
  18. ncbi Detection by the polymerase chain reaction of Anaplasma phagocytophilum in tissues of persistently infected sheep
    S Stuen
    Department of Production Animal Clinical Sciences, Norwegian School of Veterinary Science, Sandnes, Norway
    J Comp Pathol 134:101-4. 2006
    ..It seems possible that tick infestation amplifies A. phagocytophilum infections in carrier sheep to a degree that enables tick transmission to occur...
  19. ncbi A review of studies on the transmission of Anaplasma phagocytophilum from sheep: implications for the force of infection in endemic cycles
    N H Ogden
    Department of Veterinary Preclinical Sciences, Faculty of Veterinary Science, University of Liverpool, Brownlow Hill and Crown St, Liverpool L69 7ZJ, UK
    Exp Appl Acarol 28:195-202. 2002
    ..phagocytophilum infection amongst different geographic foci...
  20. ncbi Field evidence for density-dependent facilitation amongst Ixodes ricinus ticks feeding on sheep
    N H Ogden
    Department of Veterinary Preclinical Science, University of Liverpool, Faculty of Veterinary Science, UK
    Parasitology 124:117-25. 2002
    ..This suggests that larger ticks have a survival advantage and that I. ricinus ticks exhibit density-dependent intraspecific facilitation at high infestation levels with potential consequences for the transmission of tick-borne diseases...
  21. ncbi Evaluation of PCR to detect Theileria parva in field-collected tick and bovine samples in Tanzania
    N H Ogden
    Department of Veterinary Preclinical Science, Faculty of Veterinary Science, University of Liverpool, Brownlow Hill and Crown Street, L69 7ZJ, Liverpool, UK
    Vet Parasitol 112:177-83. 2003
    ..6%) and buffy coat samples from 81 (28.7%), while buffy coat samples from 66 (23.4%) were PCR-positive for T. parva. Implications of these findings for the sensitivity and specificity of the PCR are discussed...