Dr Norval Strachan

Dr Norval Strachan The University of Aberdeen School of Natural & Computing Sciences Dr Norval Strachan Reader work +44 (0)1224 272699

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Dr Norval Strachan

Personal Details

Telephone: +44 (0)1224 272699
Email: n.strachan@abdn.ac.uk
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Research Interests

My main research interest is in understanding how humans become ill by infectious diseases and what can be done to reduce the burden of illness. The questions that arise in this area cannot be addressed by a single discipline and so interdisciplinary approaches and solutions are required. This area is benefiting from the synthesis of molecular biology, statistical/mathematical methods, the social sciences as well as conventional environmental, food and medical microbiology and epidemiological techniques. My main focus is on gastrointestinal pathogens that include E. coli O157 (see RELU project), Campylobacter, Cryptosporidium, Salmonella, and Listeria. Listed below are my research areas:

  • Understanding the causes of human gastrointestinal disease via environmental and foodborne pathways - using quantitative microbiological risk assessment, temporal and spatial analysis tools.
  • Integrating natural and social science approaches to understand and develop interventions to mitigate the risk of infection for gastrointestinal pathogens.
  • Development of flow injection analysis and fibre optic evanescent wave sensors for rapid detection/fingerprinting of pollutants and microbiological pathogens from both food and environmental samples.
  • Image analysis and pattern recognition techniques applied to fisheries and environmental sciences. 

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Research Grants

 

1.      BBSRC (2012-2014) Integrating microbiology and modelling to determine the source of Campylobacter infection in the broiler house and develop interventions with Ken Forbes, Iain Ogden and Nick Sparks, £295k.

2.      MRC (2012-2017). Sources, Seasonality, Transmission and Control: Campylobacter and human behavior in a changing environment, with Ken Forbes £121k.

3.      Food Standards Agency (2011-12). Employing source attribution and molecular epidemiology to measure the impact of interventions on human campylobacteriosis in Scotland, extension, with Ken Forbes £156k.

4.      DFID (2012-2013) The potential of small-scale biogas digesters to improve livelihoods and long term sustainability of ecosystem services in sub-Saharan Africa, with Jo Smith, Liz Baggs and Sean Semple, £198k.

5.      Food Standards Agency (2011-12). A review of current practices in the management of Listeria monocytogenes during smoked fish production in Scotland and Northern England,.with Dr Mike Hutchison and Dr Kaarin Goodburn, £74k

6.      RESAS (2011-2016), RESAS Strategic Partnership for Food and Drink Science: Foodborne pathogen adaption and survival through the food chain with Ken Forbes and David Smith £212k.

7.      Food Standards Agency (2011). Employing source attribution and molecular epidemiology to measure the impact of interventions on human campylobacteriosis in Scotland with Ken Forbes & Iain Ogden £141k.

8.      Food Standards Agency, Scotland (2011), Research grant review and appraisal panel £300.

9.      Food Standards Agency,  (2011), Research grant review £150.

10.  DEFRA, Review of Research Proposals, £500.

11.  DEFRA (2011-13), Assessment of the efficacy of on-farm biosecurity measures for controlling Campylobacter £445,928 (£50k to Aberdeen), with Sparks N, Forbes KJ, Humphries T, Kevill WC.

12.  Medical Research Council (2010-11). Gastrointestinal Pathogens in the Environment Network. With Ken Forbes, Colin Hunter, Iain Ogden, John Farrington, David Smith et al.,. £50k.

13.  Scottish Funding Council, Interface, (2010-11) Microbiological safety (Listeria) in the fish farming industry, £4.7k.

14.  Food Standards Agency, (2010-11). Employing Source Attribution and Molecular Epidemiology to measure the impact of interventions on human campylobacteriosis in Scotland. £140k. With Ken Forbes, Iain Ogden and Martin Maiden.

15.  Food Standards Agency, Quality Meat Scotland and National Farmers Union (2009-2012). E. coli PhD studentship, with Ken Forbes & Iain Ogden, £33.3k.

16.  European Food Safety Authority (2008-1010),  Scientific Opinion on Quantification of the risk posed by broiler meat to human campylobacteriosis in the EU,  approx. £2k.

17.  Relu (2009) Work shadowing in the New Zealand Food Safety Authority and Food Standards Agency, Scotland, £2k.

18.  The Scottish Government (2008-09) Provision of research on evaluation of Private Water Supplies (Scotland) Regulations 2006 with Colin Hunter, Antonio Ioris, Colette Jones and John Farrington, £44k

19.  ESRC (2008-2011) Campylobacteriosis: Elucidating the Disease Burden, Risk Perception and Costs to Rural Communities and their Families. Rural Economy & Land Use programme Tied Studentship award, Economic and Social Research Council/Biotechnology and Biological Sciences Research Council. (With C. Hunter and J. Roberts). £55K.

20.  ESRC (2007-2010) Reducing E. coli O157 risk in rural communities with Prof K Killham, Prof J Farrington, Dr C Hunter, Dr D Jones, Dr G Edwards-Jones, Mr I Ogden and Dr J Roberts,  £1.48 million FEC.

21.  EU (2007-2010) Pathogenic E. coli network with Iain Ogden. 12k EURO

22.  Food Safety Inspection Service, USA. Review of Salmonella dose response model (2006) $2k.

23.  SNIFFER, Human health and the environmental impacts of using sewage sludge on Forestry and for restoration od derelict land with Prof J Ayres, Prof K Killham, Dr S Semple, Mr I Ogden (2006-07), £23.3k.

24.  FSA, MLST typing of campylobacter – support for PhD Student, with Ken Forbes and Iain Ogden (2006-08) £10k.

25.  FSA, Gegraphic and temporal variation of Campylobacteriosis in humans with Iain Ogden and Ken Forbes, (2006-2009) £121k

26.  FSA, Campylobacter in private water supplies with Iain Ogden, (2005-2008) £192k

27.  FSA, Campylobacter MLST typing extension with Ken Forbes and Iain Ogden (2008-2009) £50k

28.  FSA, Campylobacter MLST typing extension for PhD student with Ken Forbes and Iain Ogden (2005-2008) £10k

29.  FSA, Campylobacter MLST typing with Ken Forbes and Iain Ogden (2005-2008) £750k

30.  Grampian NHS Trust, Development of magnetic drug delivery devices: a novel approach to enhance delivery of chemotherapeutic agents for the treatment of cancer, (2005-2006) with AC Schofield,  I Brown, SD Heys, FJ Gilbert, O Rotariu £6.5k

31.  DEFRA – Led by University of Oxford 2005-06 – isolation, speciation and supply of genomic Campylobacter DNA for MLST typing with Iain Ogden and Ken Forbes. £8k.

32.  FSA, PhD Studentship with Iain Ogden,  (2004-2007) £20k

33.  Scantrol a/s PhD Studentship (2004-2007) £63k

34.  Norwegian Research Council, Visiting Postdoctoral worker (Anne Margrete) with Iain Ogden (2004) £4k

35.  EU, Marie Curie Fellowship with Iain Ogden (2003-2005) £71k

36.  BBSRC Committee PhD Studentship with Ken Killham (2004-2007) (est £45k)

37.  Food Standards Agency, Scotland project with Iain Ogden – E. coli  O157 excreted by cattle at abattoir and its affect on food poisoning (2003) £10k

38.  Carnegie Trust, Dose Response of E. coli O157.  Summer student with Geoff Dunn (2003) £1k

39.  DNV, Risk assessment of foot-and-mouth burial site (2003) £3k

40.  University of Aberdeen, Visiting Scholars Programme – Peter Teunis –RIVM £700.

41.  University of Aberdeen, Faculty of Science & Engineering PhD Studentship. Understanding the causes of human Campylobacteriosis with Geoff Dunn (2002-2005) est £45k

42.  Food Standards Agency, The effect of FMD on foodborne zoonoses (2001). (with Iain Ogden, Dept. Medical Microbiology) £2k

43.  Food Standards Agency, Application and validation of techniques for the detection of pathogens in shellfish (2000-2002) (with Iain Ogden, Dept. Medical Microbiology) £204k.

44.  Matcon, Denmark - funded project to provide Documentation System for Industrial Fish Catches (1999-02) £120k.

45.  Royal Society, Flow Immunoassay of Pollutants (1999-2001) £10k.

46.  Royal Society, Magnetic Particle Modelling with Inst. Technical Physics, Iasi, Romania (1999-2000) £2k

47.  NERC - Mathematical modelling of Tropical Forest Seed Germination and Seedling Establishment (1999-2001) with Dr David Burslem and Dr Chris Mullins £30k.


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External Responsibilities

  • MRC, NSF and FSA grants review panel member.
  • ESRC peer review College member
  • External European Food Safety Authority Expert on Campylobacter in broiler chickens.
  • Co-chair CHRO 2013
  • External examiner Glasgow University
  • Co-chair of FoodMicro 2008 
  • Editor of Special Edition of International Journal of Food Microbology containing papers from FoodMicro 2008.
  • Member of Editorial Board of International Journal of Food Microbiology
  • Member of Editorial Board of Water, Quality, Exposure and Health

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PhD Students

  • Nigel Turner:              Toxicity Fingerprinting of Pollutants, 2001
  • Tinnakorn Tiensing:     Toxicity of pollutants in soils, 2002
  • Gordon Miller:            Understanding the causes of human Campylobacteriosis, 2006
  • Helen Gordon:            Movement of E. coli through soil, 2007
  • Darren White:             Fish species identification using image processing techniques, 2007
  • Olivia Solecki:             Explaining the urban and rural differences of E. coli O157 infection in Grampian, 2008
  • Fraser Gormley:          The rise and fall of campylobacter infections in humans and poultry, 2008
  • Emma Sproston:          Invertebrate vectors of gastrointestinal pathogens, 2008
  • Laura MacRichie:        Understanding the risks of Campylobacter in rural areas (estimate 2012)
  • Eilidh Fraser               E. coli O157 (estimate 2012)
  • Murray Robb              Proteomics of Campylobacter (estimate 2014)

 


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Current/Recent Postdoctoral Fellows

  • Dr Ovidiu Rotariu - Risk assessment and spatial epidemiology of Campylobacter and E. coli O157.
  • Dr Emma Sproston - Campylobacter typing studies
  • Dr Helen Gordon - Survival and persistence of E. coli O157 in the environment.
  • Dr John Dallas - Molecular subtyping of Campylobacter.

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Recent and Ongoing External Collaborations

  • Reducing E. coli risk in rural communities - see RELU project for list of collaborators.
  • Molecular subtyping and spatial epidemiology of Campylobacter - Prof Martin Maiden and Dr Sam Sheppard (University of Oxford), Dr Alison Smith-Palmer (Health Protectin Scotland), Prof Stuart Reid, Dr Louise Matthews (University of Glasgow), Dr Giles Innocent (BIOSS),
  • Dose Response Modelling - Dr Peter Teunis (RIVM, the Netherlands), Dr Fumiko Kasuga (National Institute of Health, Japan), Prof Mike Doyle (University of Georgia), Aamir Fazil (Public Health Agency of Canada),
  • Sexual Dimorphism in Campylobacter - Prof Jorge Galan (Yale University)
  • Computer vision applied to Fisheries - Erik Andersen (Matcon, Denmark) and Scantrol a/s, Norway,
  • Risk assessment of E. coli O157 - Dr Andy Vinten (Macaulay Land Use Research Institute), Dr Mary Locking (Health Protection Scotland)

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Selected Conference Presentations and Invited Talks

 

  1. VTEC, Amsterdam, The Netherlands,   Escherichia coli O157 risk in rural communities, May 2012.
  2. VTEC, Amsterdam, The Netherlands,   MLVA typing elucidates the epidemiology of VTEC infection in Scotland, May 2012.
  3. Campy, UK. Seasonality in human Campylobacteriosis, London, January, 2012.
  4. Safefood International Campylobacter conference, Dublin, Ireland, Epidemiology of Campylobacter in Scotland,  September, 2011.
  5. CHRO, Vancouver, Canada, Elucidating the seasonality of human Campylobacter infections meeting, August, 2011.
  6. Presentation to Food Standards Agency Chief Executive Tim Smith on Aberdeen’s research (done jointly by research group), August 2011.
  7. New Horizons for animal and plant disease from the Relu programme, London, Experiences from the E. coli O157 project  (joint with John Farrington), May 2011.
  8. Advisory Committee on the Microbiological Safety of Food, London, Presentation on the findings of the RELU, E. coli O157 project, January 2011.
  9. Risk Workshop, York, Integrating Evidence on Intervention for Policy, November, 2010.
  10. Animal/Plant Disease Forum, London, Reducing E. coli  O157 risk in rural communities, October, 2010.
  11. FoodMicro 2010, Copenhagen, Denmark The changing Campylobacter epidemic, August, 2010.
  12. DEFRA, London, Reducing E. coli O157 risk in rural communities, January 2010.
  13. RELU, Disease Forum, London,  Reducing E. coli  O157 risk in rural communities, May, 2009.
  14. New Zealand Food Safety Authority/Industry Workshop, Wellington, New Zealand, Microbial sub-typing and census sites: Scotland, October, 2009.
  15. Massey University, Palmerston-North, New Zealand, A tale of two pathogens – trying to understand Campylobacter and E. coli O157 infection source & pathways in Scotland, October 2009,
  16. New Zealand Food Safety Authority, Wellington, New Zealand, lunchbox talk,  Reducing the risk of E. coli O157, October 2009.
  17. CHRO, Nigaata, Japan, Temporal clustering of clinical Campylobacter strains across Scotland during 2005-06, September, 2009
  18. Burden of Infectious Diseases meeting, Tokyo, Japan, Campylobacter attribution using Microbial Sub-typing - the experience from Scotland, September, 2009
  19. EFSA, Addlestone (at Vet labs Agency), Source Attribution of Campylobacter using Microbial Sub-typing: The experience from Scotland,  June, 2009
  20. MedVetNet Utrecht, The Netherlands. Invited presentation on spatial epidemiology of gastrointestinal pathogens March 2009.
  21. Food Standards Agency RELU Presentation March 2009
  22. Microbiology theme, Aberdeen, Unravelling the causes of Campylobacter and E. coli O157 infections in Scotland.
  23. FoodMicro 2008, Aberdeen, Scotland. Dose response for Salmonella using outbreak data.
  24. Aberdeen Research Consortium, Environmental Health Meeting, Aberdeen, 2008. Pathogens in the environment – Do we need to be worried?
  25. Pathogenic E. coli network, Stockholm, 2008. Risk Maps and MLVA typing elucidate the epidemiology of VTEC infection in NE Scotland.
  26. RELU, Food Forum, REDUCING ESCHERICHIA COLI O157 RISK IN RURAL COMMUNITIES, May, 2008.
  27. 2nd International Conference on Microbiological Risk Assessment, Sydney, Australia. Invited talk: Dose response modelling and risk assessment of E. coli O157.
  28. SFAM annual meeting, London, UK. Invited talk on Epidemiology of Gastrointestinal Pathogens in the Grampian Region of Scotland.
  29. Invited talk at RIVM, Bilthoven, the Netherlands, Examples of the Spatial and Temporal Epidemiology of Gastrointestinal Pathogens in Grampian, Scotland.
  30. VTEC Network Ireland meeting, Dublin, 2004. The role of Quantitative Risk Assessment in assessing and controlling the public health risk posed by recreational exposure to VTEC.
  31. Food Micro 2004 Slovenia. E. coli  O157: Burger Bug or Environmental Pathogen?
  32. EU meeting, Poznan, Poland, 2003, Detection and modelling of foodborne pathogens.
  33. Invited talk Scottish Centre for Infection and Environmental Health, 2003, Seasonality of gastrointestinal infections.
  34. Aberdeen Research Consortium 2003 - Epidemiology of gastrointestinal pathogens
  35. Food Standards Agency presentation 2003– Seasonality of Campylobacter
  36. Invited plenary speaker at Food Micro 2002. Applications of a dose response model for E. coli  O157 to help explain foodborne outbreaks
  37. International Association of Food Protection, San Diego, USA, 2002. A dose response model for E. coli O157
  38. Invited Talk University of Liverpool, 2002,  E. coli O157 Outbreak and Risk Analysis Studies.
  39. Invited expert talk – E. coli Task Force 2001. Mitigation strategies for recreational use of pasture.
  40. Invited talk (SAC) 2004 - epidemiology of gastrointestinal infections.
  41. Organic Farming Conference 1999 – invited talk on Foodborne Pathogens.

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Publications

Contributions to Journals

Articles

  • Strachan, NJC., Macrae, M., Thomson, A., Rotariu, O., Ogden, ID. & Forbes, KJ. (2012). 'Source attribution, prevalence and enumeration of Campylobacter spp. from retail liver'. International Journal of Food Microbiology, vol 153, no. 1-2, pp. 234-236.
    [Online] DOI: 10.1016/j.ijfoodmicro.2011.10.033
  • Sheppard, SK., Colles, FM., McCarthy, ND., Strachan, NJC., Ogden, ID., Forbes, KJ., Dallas, JF. & Maiden, MCJ. (2011). 'Niche segregation and genetic structure of Campylobacter jejuni populations from wild and agricultural host species'. Molecular Ecology, vol 20, no. 16, pp. 3484-3490.
    [Online] DOI: 10.1111/j.1365-294X.2011.05179.x
  • Sproston, EL., Ogden, ID., MacRae, M., Dallas, JF., Sheppard, SK., Cody, AJ., Colles, FM., Wilson, MJ., Forbes, KJ. & Strachan, NJC. (2011). 'Temporal Variation and Host Association in the Campylobacter Population in a Longitudinal Ruminant Farm Study'. Applied and Environmental Microbiology, vol 77, no. 18, pp. 6579-6586.
    [Online] DOI: 10.1128/AEM.00428-11
  • Sheppard, SK., Dallas, JF., Wilson, DJ., Strachan, NJC., McCarthy, ND., Jolley, KA., Colles, FM., Rotariu, O., Ogden, ID., Forbes, KJ. & Maiden, MCJ. (2010). 'Evolution of an Agriculture-Associated Disease Causing Campylobacter coli Clade: Evidence from National Surveillance Data in Scotland'. PLoS one, vol 5, no. 12, pp. -.
    [Online] DOI: 10.1371/journal.pone.0015708
  • Rotariu, O., Smith-Palmer, A., Cowden, J., Bessell, PR., Innocent, GT., Reid, SWJ., Matthews, L., Dallas, J., Ogden, ID., Forbes, KJ. & Strachan, NJC. (2010). 'Putative household outbreaks of campylobacteriosis typically comprise single MLST genotypes'. Epidemiology and Infection, vol 138, no. 12, pp. 1744-1747.
    [Online] DOI: 10.1017/S0950268810001457
  • Bessell, PR., Matthews, L., Smith-Palmer, A., Rotariu, O., Strachan, NJC., Forbes, KJ., Cowden, JM., Reid, SWJ. & Innocent, GT. (2010). 'Geographic determinants of reported human Campylobacter infections in Scotland'. BMC Public Health, vol 10, pp. 423.
    [Online] DOI: 10.1186/1471-2458-10-423
  • Gormley, FJ., Strachan, NJC., Reay, K., MacKenzie, FM., Ogden, ID., Dallas, JF. & Forbes, KJ. (2010). 'Antimicrobial Resistance Profiles of Campylobacter from Humans, Retail Chicken Meat, and Cattle Feces'. Foodborne Pathogens and Disease, vol 7, no. 9, pp. 1129-1131.
    [Online] DOI: 10.1089/fpd.2009.0532
  • Sproston, EL., Ogden, ID., MacRae, M., Forbes, KJ., Dallas, J., Sheppard, S., Cody, A., Colles, F., Wilson, MJ. & Strachan, NJC. (2010). 'Multi-locus sequence types of Campylobacter carried by flies and slugs acquired from local ruminant faeces'. Journal of Applied Microbiology, vol 109, no. 3, pp. 829-838.
    [Online] DOI: 10.1111/j.1365-2672.2010.04711.x
  • Ogden, ID., Dallas, JF., MacRae, M., Rotariu, O., Reay, KW., Leitch, M., Thomson, AP., Sheppard, SK., Maiden, M., Forbes, KJ. & Strachan, NJC. (2009). 'Campylobacter Excreted into the Environment by Animal Sources'. Foodborne Pathogens and Disease, vol 6, no. 10, pp. 1161-1170.
    [Online] DOI: 10.1089/fpd.2009.0327
  • Rotariu, O., Dallas, JF., Ogden, ID., MacRae, M., Sheppard, SK., Maiden, MCJ., Gormley, FJ., Forbes, KJ. & Strachan, NJC. (2009). 'Spatiotemporal Homogeneity of Campylobacter Subtypes from Cattle and Sheep across Northeastern and Southwestern Scotland'. Applied and Environmental Microbiology, vol 75, no. 19, pp. 6275-6281.
    [Online] DOI: 10.1128/AEM.00499-09
  • Sheppard, SK., Dallas, JF., MacRae, M., McCarthy, ND., Sproston, EL., Gormley, FJ., Strachan, NJC., Ogden, ID., Maiden, MCJ. & Forbes, KJ. (2009). 'Campylobacter genotypes from food animals, environmental sources and clinical disease in Scotland 2005/6'. International Journal of Food Microbiology, vol 134, no. 1-2, pp. 96-103.
    [Online] DOI: 10.1016/j.ijfoodmicro.2009.02.010
  • Strachan, NJC., Gormley, FJ., Rotariu, O., Ogden, ID., Miller, G., Dunn, GM., Sheppard, SK., Dallas, JF., Reid, T., Howie, H., Maiden, MCJ. & Forbes, KJ. (2009). 'Attribution of Campylobacter Infections in Northeast Scotland to Specific Sources by Use of Multilocus Sequence Typing'. Journal of Infectious Diseases, vol 199, no. 8, pp. 1205-1208.
    [Online] DOI: 10.1086/597417
  • Sheppard, SK., Dallas, JF., Strachan, NJC., MacRae, M., McCarthy, ND., Wilson, DJ., Gormley, FJ., Falush, D., Ogden, ID., Maiden, MCJ. & Forbes, KJ. (2009). 'Campylobacter Genotyping to Determine the Source of Human Infection'. Clinical Infectious Diseases, vol 48, no. 8, pp. 1072-1078.
    [Online] DOI: 10.1086/597402
  • Forbes, KJ., Gormley, FJ., Dallas, JF., Labovitiadi, O., MacRae, M., Owen, J., Richardson, J., Strachan, NJC., Cowden, JM., Ogden, ID. & McGuigan, CC. (2009). 'Campylobacter Immunity and Coinfection following a Large Outbreak in a Farming Community'. Journal of Clinical Microbiology, vol 47, no. 1, pp. 111-116.
    [Online] DOI: 10.1128/JCM.01731-08
  • MacPhee, DE., Wells, RPK., Kruth, A., Todd, MJ., Elmorsi, T., Smith, WCS., Pokrajac, D., Strachan, NJC., Scott-Emuakpor, E., Nissen, S. & Killham, KS. (2009). 'A visible light driven photoelectrocatalytic fuel cell for clean-up of contaminated water supplies'. Desalination, vol 248, no. 1-3, pp. 132-137.
    [Online] DOI: 10.1016/j.desal.2008.05.048
  • Solecki, O., MacRae, M., Strachan, NJC., Lindstedt, B. & Ogden, ID. (2009). 'E. coli O157 from sheep in northeast Scotland: prevalence, concentration shed, and molecular characterization by multilocus variable tandem repeat analysis'. Foodborne Pathogens and Disease, vol 6, no. 7, pp. 849-54.
    [Online] DOI: 10.1089/fpd.2008.0216
  • Williams, AP., Gordon, H., Jones, D., Strachan, NJC., Avery, LM. & Killham, KS. (2008). 'Leaching of bioluminescent Escherichia coli O157:H7 from sheep and cattle faeces during simulated rainstorm events'. Journal of Applied Microbiology, vol 105, no. 5, pp. 1452-1460.
    [Online] DOI: 10.1111/j.1365-2672.2008.03898.x
  • Strachan, NJC., Dunn, GM., Locking, ME., Reid, TM. & Ogden, ID. (2006). 'Escherichia coli O157: Burger bug or environmental pathogen?'. International Journal of Food Microbiology, vol 112, no. 2, pp. 129-137.
    [Online] DOI: 10.1016/j.ijfoodmicro.2006.06.021
  • Sproston, EL., MacRae, M., Ogden, ID., Wilson, MJ. & Strachan, NJC. (2006). 'Slugs: Potential Novel Vectors of Escherichia coli 0157'. Applied and Environmental Microbiology, vol 72, no. 1, pp. 144-149.
    [Online] DOI: 10.1128/AEM.72.1.144-149.2006
  • Mwinyihija, M., Meharg, AA., Killham, KS., Strachan, NJC. & Dawson, JJC. (2006). 'An ecotoxicological approach to assessing the impact of tanning industry effluent on river health'. Archives of Environmental Contamination and Toxicology, vol 50, no. 3, pp. 316-324.
    [Online] DOI: 10.1007/S00244-005-1049-9
  • Ogden, ID., MacRae, M. & Strachan, NJC. (2005). 'Concentration and prevalence of Escherichia coli O157 in sheep faeces at pasture in Scotland'. Journal of Applied Microbiology, vol 98, pp. 646-651.
    [Online] DOI: 10.1111/j.1365-2672.2004.02493.x
  • Strachan, NJC., MacRae, M. & Ogden, ID. (2005). 'Quantifying the E. coli O157 reservoir in Grampian, Scotland'. Veterinary Record, vol 156, pp. 282-283.
  • MacRae, M., Strachan, NJC., Wright, S. & Ogden, ID. (2005). 'The detection of Cryptosporidium parvum and Escherichia coli O157 in UK bivalve shellfish'. Journal of Microbiological Methods, vol 60, pp. 395-401.
    [Online] DOI: 10.1016/j.mimet.2004.10.017
  • Miller, G., Dunn, GM., Reid, TM., Ogden, ID. & Strachan, NJC. (2005). 'Does age acquired immunity confer selective protection to common serotypes of Campylobacter jejuni?'. BMC Infectious Diseases, vol 5, no. 66.
  • Rotariu, O. & Strachan, NJC. (2005). 'Modelling magnetic carrier particle targeting in the tumor microvasculature for cancer treatment'. Journal of Magnetism and Magnetic Materials, vol 293, no. 1, pp. 639-646.
    [Online] DOI: 10.1016/j.jmmm.2005.01.081
  • Mwinyihija, M., Killham, K., Rotariu, O., Meharg, A. & Strachan, NJC. (2005). 'Assessing the occupational risk of dust particles in the Kenyan tanning industry using rapid image processing and microscopy techniques'. International Journal of Environmental Health Research, vol 15, no. 1, pp. 53-62.
    [Online] DOI: 10.1080/09603120400018931
  • Yesilkaya, H., Dale, JW., Strachan, NJC. & Forbes, KJ. (2005). 'Natural transposon mutagenesis of clinical isolates of Mycobacterium tuberculosis: How many genes does a pathogen need?'. Journal of Bacteriology, vol 187, no. 19, pp. 6726-6732.
    [Online] DOI: 10.1128/JB.187.19.6726-6732.2005
  • Strachan, NJC., Doyle, MP., Kasuga, F., Rotariu, O. & Ogden, ID. (2005). 'Dose response modelling of Escherichia coli O157 incorporating data from foodborne and environmental outbreaks'. International Journal of Food Microbiology, vol 103, no. 1, pp. 35-47.
    [Online] DOI: 10.1016/j.ijfoodmicro.2004.11.023
  • Rotariu, O., Ogden, ID., MacRae, M., Udrea, LA. & Strachan, NJC. (2005). 'Multiple sample flow through immunomagnetic separator for concentrating pathogenic bacteria'. Physics in Medicine and Biology, vol 50, no. 12, pp. 2967-2977.
    [Online] DOI: 10.1088/0031-9155/50/12/016
  • Mwinyihija, M., Strachan, NJC., Meharg, AA. & Killham, KS. (2005). 'Biosensor based toxicity dissection of tannery and associated environmental samples'. Journal of the American Leather Chemists Association, vol 100, no. 10, pp. 380-395.
  • Mwinyihija, M., Strachan, NJC., Meharg, AA. & Killham, K. (2005). 'Biosensor based toxicity dissection of tannery and associated environmental samples (vol 100, pg 380, 2005)'. Journal of the American Leather Chemists Association, vol 100, no. 11, pp. 466-466.
  • Iacob, G., Rotariu, O., Strachan, NJC. & Hafeli, UO. (2004). 'Magnetizable needles and wires - modeling an efficient way to target magnetic microspheres in vivo'. Biorheology, vol 41, no. 5, pp. 599-612.
  • Garden, SR., Doellgast, GJ., Killham, KS. & Strachan, NJC. (2004). 'A fluorescent coagulation assay for thrombin using a fibre optic evanescent wave sensor'. Biosensors & Bioelectronics, vol 19, pp. 737-740.
    [Online] DOI: 10.1016/j.bios.2003.08.002
  • Ogden, ID., MacRae, M. & Strachan, NJC. (2004). 'Is the prevalence and shedding concentrations of E. coli O157 in beef cattle in Scotland seasonal?'. FEMS Microbiology Letters, vol 233, no. 2, pp. 297-300.
    [Online] DOI: 10.1111/j.1574-6968.2004.tb09495.x
  • Drysdale, M., MacRae, M., Reid, TM., Strachan, NJC. & Ogden, ID. (2004). 'The detection of non-O157 E. coli in food by immunomagnetic separation'. Journal of Applied Microbiology, vol 97, no. 1, pp. 220-224.
    [Online] DOI: 10.1111/j.1365-2672.2004.02301.x
  • Rotariu, O., Strachan, NJC. & Badescu, V. (2004). 'A stochastic model simulating the capture of pathogenic micro-organisms by superparamagnetic particles in an isodynamic magnetic field'. Physics in Medicine and Biology, vol 49, no. 17, pp. 3971-3978.
    [Online] DOI: 10.1088/0031-9155/49/17/010
  • Rotariu, O., Iacob, G., Strachan, NJC. & Chiriac, H. (2004). 'Simulating the embolization of blood vessels using magnetic microparticles and acupuncture needle in a magnetic field'. Biotechnology Progress, vol 20, no. 1, pp. 299-305.
    [Online] DOI: 10.1021/bp034146o
  • Strachan, NJC., Ogden, ID., Smith-Palmer, A. & Jones, K. (2003). 'Foot and mouth epidemic reduces cases of human cryptosporidiosis in Scotland'. Journal of Infectious Diseases, vol 188, no. 5, pp. 783-786.
    [Online] DOI: 10.1086/377237
  • Rotariu, O. & Strachan, NJC. (2003). 'Magnetic-field-induced order in assemblies of superparamagnetic carrier particles'. Powder Technology, vol 132, no. 2-3, pp. 226-232.
    [Online] DOI: 10.1016/S0032-5910(03)00074-3
  • Aitkenhead, M., Dalgetty, IA., Mullins, C., McDonald, AJS. & Strachan, NJC. (2003). 'Weed and crop discrimination using image analysis and artificial intelligence methods'. Computers and Electronics in Agriculture, vol 39, no. 3, pp. 157-171.
    [Online] DOI: 10.1016/S0168-1699(03)00076-0
  • Omisakin, F., MacRae, M., Ogden, ID. & Strachan, NJC. (2003). 'Concentration and prevalence of Escherichia coli O157 in cattle faeces at slaughter'. Applied and Environmental Microbiology, vol 69, no. 5, pp. 2444-2447.
    [Online] DOI: 10.1128/AEM.69.5.2444-2447.2003
  • Tiensing, T., Strachan, NJC. & Paton, GI. (2002). 'Evaluation of interactive toxicity of chlorophenols in water and soil using lux-marked biosensors'. Journal of Environmental Monitoring, vol 4, pp. 482-289.
    [Online] DOI: 10.1039/b202070j
  • Rotariu, O., Strachan, NJC. & Badescu, V. (2002). 'Modelling of microorganisms capture on magnetic carrier particles'. Journal of Magnetism and Magnetic Materials, vol 252, no. 1-3, pp. 390-392.
    [Online] DOI: 10.1016/S0304-8853(02)00707-2
  • Strachan, NJC., Ogden, ID. & Dunn, GM. (2002). 'Quantitative risk assessment of human infection from E coli O157 associated with recreational use of animal pasture'. International Journal of Food Microbiology, vol 75, no. 1-2, pp. 39-51.
    [Online] DOI: 10.1016/S0168-1605(01)00727-9
  • Horsburgh, AM., Mardlin, D., Turner, NL., Henkler, R., Strachan, NJC., Glover, LA., Paton, GI. & Killham, KS. (2002). 'On-line microbial biosensing and fingerprinting of water pollutants'. Biosensors & Bioelectronics, vol 17, no. 6-7, pp. 495-501.
    [Online] DOI: 10.1016/S0956-5663(01)00321-9
  • Ogden, ID., Hepburn, NF., Strachan, NJC., Pennington, TH., MacRae, M., Fenlon, DR. & Rusbridge, SM. (2002). 'Long-term survival of Escherichia coli O157 on pasture following an outbreak associated with sheep at a scout camp'. Letters in Applied Microbiology, vol 34, no. 2, pp. 100-104.
    [Online] DOI: 10.1046/j.1472-765x.2002.01052.x
  • Rotariu, O., Strachan, NJC. & Badescu, V. (2002). 'Some aspects concerning the design of an immunomagnetic separation process'. Czechoslovak Journal of Physics, vol 52, no. 5, pp. 719-724.
    [Online] DOI: 10.1023/A:1015538913446
  • Strachan, NJC., Ogden, ID. & Fenlon, DR. (2001). 'Modelling the vector pathway and infection of humans in an environmental outbreak of Escherichia coli O157'. FEMS Microbiology Letters, vol 203, no. 1, pp. 69-73.
    [Online] DOI: 10.1111/j.1574-6968.2001.tb10822.x
  • Tiensing, T., Preston, S., Strachan, NJC. & Paton, GI. (2001). 'Soil solution extraction techniques for microbial ecotoxicity testing: a comparative evaluation'. Journal of Environmental Monitoring, vol 3, pp. 91-96.
    [Online] DOI: 10.1039/b007851o
  • Garden, SR. & Strachan, NJC. (2001). 'Novel colorimetric immunoassay for the detection of aflatoxin B-1'. Analytica Chimica Acta, vol 444, pp. 187-191.
    [Online] DOI: 10.1016/S0003-2670(01)01231-4
  • Turner, NL., Horsburgh, AM., Paton, GI., Killham, KS., Meharg, AA., Primrose, S. & Strachan, NJC. (2001). 'A novel toxicity fingerprinting method for pollutant identification with lux-marked biosensors'. Environmental Toxicology and Chemistry, vol 20, pp. 2456-2461.
    [Online] DOI: 10.1897/1551-5028(2001)020<2456:ANTFMF>2.0.CO;2

Editorials

  • Strachan, NJC. & Forbes, KJ. (2010). 'The growing UK epidemic of human campylobacteriosis'. Lancet, vol 376, no. 9742, pp. 665-667.
    [Online] DOI: 10.1016/S0140-6736(10)60708-8
  • Strachan, NJC. & Ogden, ID. (2009). 'Food Micro 2008 "Evolving Microbial Food Safety and Quality" 1-4 September 2008, Aberdeen, Scotland, UK: Food Micro 2008'. International Journal of Food Microbiology, vol 134, no. 1/2, pp. 1.

Abstracts

  • Gormley, FJ., MacRea, M., Forbes, KJ., Ogden, ID., Dallas, JF. & Strachan, NJC. (2007). 'The Decline of Human Campylobacteriosis and Retail Poultry in NE Scotland–a CaMPS Study'. Zoonoses and Public Health, vol 54, no. Supplement s1, pp. 29-29.
    [Online] DOI: 10.1111/j.1863-2378.2007.01053.x
  • Strachan, NJC., Miller, G., Dunn, GM., Reid, T., Ogden, ID., Sproston, EL., Gormley, FJ., Yiu, TT., Forbes, KJ., Dallas, JF., Sheppard, SK., Maiden, MC., Williams, A., MacRae, M. & Rotariu, O. (2007). 'Are Environmental Sources of Campylobacter Important for Human Infection? A CaMPS Study'. Zoonoses and Public Health, vol 54, no. Supplement s1, pp. 40-40.
    [Online] DOI: 10.1111/j.1863-2378.2007.01053.x
  • Dallas, JF., Forbes, KJ., Gormley, FJ., MacRae, M., Maiden, MC., McGuigan, C., Ogden, ID., Reay, KW., Rotariu, O., Sheppard, SK., Strachan, NJC. & Williams, A. (2007). 'Local Outbreaks of Campylobacteriosis in Scotland Involving More Than One Strain: A CaMPS study'. Zoonoses and Public Health, vol 54, no. Supplement s1, pp. 43-43.
    [Online] DOI: 10.1111/j.1863-2378.2007.01053.x
  • Ogden, ID., Ogden, ID., Forbes, KJ., Gormely, FJ., MacRae, M., Maiden, MC., Reay, KW., Rotariu, O., Sheppard, S., Williams, A. & Strachan, NJC. (2007). 'Prevalence, Enumeration and Molecular Subtyping of Campylobacter from Environmental and Retail Food Sources in Scotland: A CaMPS study'. Zoonoses and Public Health, vol 54, no. Supplement s1, pp. 43-43.
    [Online] DOI: 10.1111/j.1863-2378.2007.01053.x
  • Forbes, KJ., Dallas, JF., Gormley, FJ., MacRae, M., Maiden, MC., Ogden, ID., Reay, KW., Rotariu, O., Sheppard, SK., Sproston, EL., Strachan, NJC. & Williams, A. (2007). 'CaMPS: The Campylobacter MLST project in Scotland'. Zoonoses and Public Health, vol 54, no. Supplement s1, pp. 43-44.
    [Online] DOI: 10.1111/j.1863-2378.2007.01053.x
  • Sproston, EL., Ogden, ID., MacRae, M., Forbes, KJ., Dallas, JF., Sheppard, SK., Maiden, MC., Rotariu, O., Reay, KW., Williams, A., Cody, A., Colles, F. & Strachan, NJC. (2007). 'Incidence, Diversity and Vector Transmission of Campylobacter Sequence Types in a Longitudinal Study of Farm Ruminants: A Camps Study'. Zoonoses and Public Health, vol 54, no. Supplement s1, pp. 137-137.
    [Online] DOI: 10.1111/j.1863-2378.2007.01053.x

Chapters in Books, Reports and Conference Proceedings

Chapters

  • Strachan, NJC. & Ogden, ID. (2001). 'Mitigation strategies for recreational use of pasture'. Task Force on E. coli O157 Final Report (www.food.gov.uk/multimedia/pdfs/ecolitaskfinreport) Task Force on E. coli O157 Final Report (www.food.gov.uk/multimedia/pdfs/ecolitaskfinreport), pp. 30-32.

Books and Reports

Commissioned Reports

  • Hunter, CJ., Vergunst, PJB., Jones, CDR., Ioris, A., Strachan, NJC. & Farrington, JH. (2009). 'Private Water Supplies (Scotland) Regulations 2006: Understanding Engagement of Owners and Users'. The Scottish Government, Scotland.

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