James Scott

PhD, ARMCCM
Contact Information
Email Address: 
Office Phone Number: 
+1 416 946 8778
Division of Occupational & Environmental Health
223 College Street
Toronto
Ontario
M5T 1R4
Current DLSPH Academic & Administrative Appointments
Current Position: 
Associate Professor
SGS Status: 
Full Member
Appointment Status: 
Tenured
Administrative Positions: 
Division Head
Education & Training History

James Scott earned his PhD in the Department of Botany at the University of Toronto studying the taxonomy and ecology of moulds in house dust, completing a doctoral minor in Occupational Hygiene in the Department of Community Health. Prior to that, Dr. Scott completed a BSc in Phytopathology, also at the University of Toronto. Dr. Scott joined the Department of Public Health Sciences and the Gage Occupational & Environmental Health Unit in 2002 as an Assistant Professor and was awarded tenure and promoted to Associate Professor in 2009. His research bridges occupational health and environmental health, focusing on the measurement of exposure to health-relevant biological contaminants, particularly bioaerosols. Dr. Scott's laboratory uses conventional microbiological methods in addition to molecular diagnostics including high through-put next-generation DNA sequencing to investigate the composition and dynamics of a variety of microbial communities. Currently, Dr. Scott co-leads SyMBIOTA, a large, CIHR-funded, multi-disciplinary team studying the impact of perinatal environmental exposures on early-life atopy and asthma in response to perturbations of the developing human gut microbiome. He also leads an Alfred P. Sloan Foundation project on microbiology of the built environment.

Dr. Scott teaches graduate courses in DLSPH on occupational microbiological hazards (indoor air quality, health care infection control, biosafety, weaponized microbes) and public health sanitation, and a 4th year undergraduate course in the U of T Human Biology program on medical and veterinary mycology. He received the 2006 Robin Badgley Award for Teaching Excellence, Early Career. Dr. Scott has been interviewed by numerous national and international media, and his work has recently been featured in articles in Wired Magazine, New Scientist Magazine, Discover, the Globe & Mail and the New York Times.

Prior to joining DLSPH, Dr. Scott founded Sporometrics Inc. in 1993, an ISO-accredited commercial environmental microbiology laboratory. Under Dr. Scott's leadership, Sporometrics became, and continues to be, one of the largest research-intensive commercial diagnostic microbiology laboratories in North America and a global leader in the innovation and provision of rapid, cutting edge molecular diagnostic tools to detect indoor microbes such as molds and Legionella as well as insect-vectored agents ranging from West Nile virus to phytoplasma crop pathogens in the developing world.

In addition to his activates at DLSPH, Dr. Scott is cross-appointed in the Li Ka Shing Knowledge Institute at St. Michael's Hospital, and in the Division of Clinical Pharmacology and Toxicology in the Department of Medicine where he has long served as the lead provincial consultant on mushroom poisoning to the Ontario Poison Centre located at the Hospital for Sick Children. Dr. Scott is a member of the American Industrial Hygiene Association (AIHA) Proficiency Analytical Testing (PAT) Programs Board, the Past President of the Pan-American Aerobiology Association and Past Chair of the Environmental and Medical Mycology Committee of the Mycological Society of America. He is also the Scientific Advisor to the Mycological Society of Toronto, a regional group of several hundred amateur mushroom enthusiasts.

Other Affiliations
  • Assistant Professor, Department of Medicine (Division of Clinical Pharmacology and Toxicology), University of Toronto
  • Scientist, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto
Research Interests
  • Biological hazards in occupational and environmental hygiene
  • Molecular detection of bioaerosols
  • Bioaerosol sampling technology
  • DNA sequence-based studies of human and environmental microbiomes
  • Housing and health
  • Environmental exposures and allergic disease
  • Biodeterioration and biodegradation
  • Environmental microbiology
  • Evolutionary biology and ecology of microfungi
Primary Teaching Responsibilities
Honours and Awards
  • Robin Badgley Award for Teaching Excellence, Early Career (2006)
Current Research Projects
  • SyMBIOTA - An investigation of the relationship between early life antibiotic use and allergic disease, mediated by changes in gut microbial succession (funded by CIHR)
  • Use of high through-put next generation DNA sequencing to investigate the microbiome of moisture damaged building materials as a basis to develop improved biodeterioration resistance tests (funded by Alfred P Sloan Foundation)
  • Canadian Healthy Infant Longitudinal Development (CHILD) study, a birth cohort examining the environmental risk factors for early childhood allergy and asthma (funded by CIHR and AllerGen NCE)
  • Microbiology of metalworking fluids (funded by Ontario WSIB)
  • Detection methodology for viral bioaerosol (funded by Ontario WSIB)
  • Characterization of microbial populations in air and dust using molecular genetic methods (funded by AllerGen NCE)
Representative Publications
  1. Konya T, Koster B, Maughan H, Escobar M, Azad MB, Guttman DS, Sears MR, Becker AB, Brook JR, Takaro TK, Kozyrskyj AL, Scott JA, and the CHILD Investigators. 2014. Associations between bacterial communities in house dust and infant gut. Environmental Research 131: 25-30.
  2. Azad MB, Konya T, Maughan H, Guttman DS, Field CJ, Chari RS, Sears MR, Becker AB, Scott JA, Kozyrskyj AL. 2013. Gut microbiota in Canadian infants: profiles by mode of delivery and infant diet at 4 months. Canadian Medical Association Journal (CMAJ) 185: 385–394.
  3. Savory E, Sabarinathan J, Sauer A, Scott JA. 2012. An optoelectronic sensor for the monitoring of mould growth in concealed spaces. Building and Environment 49: 9–16.
  4. Drudge C, Krajden S, Summerbell RC, Scott JA. 2011. Detection of antibiotic resistance genes associated with methicillin-resistant Staphylococcus aureus (MRSA) and coagulase negative Staphylococci in hospital air filter dust by PCR. Aerobiologia 28: 285–289.
  5. Summerbell RC, C. Gueidan C, Schroers H-J, de Hoog GS, Starinck M, van Iperen A, Rehner S, Arocha Rosete Y, Guarro J, Scott JA. 2011. Acremonium phylogenetic overview and revision of Gliomastix, Trichothecium and Sarocladium. Studies in Mycology 68: 139–162.
  6. Scott JA, Untereiner WA, Wong B, Summerbell RC. 2008. A survey of Penicillium brevicompactum and P. bialowiezense from indoor environments with commentary on the taxonomy of the P. brevicompactum group. Botany 86: 732–741.
  7. Saldanha R, Manno M, Saleh M, Ewaze JO, Scott JA. 2008. The influence of sampling duration on recovery of viable fungi using the Andersen N6 and RCS Biotest bioaerosol samplers. Indoor Air 18: 464–472.
  8. Gräser Y, Scott JA, Summerbell RC. 2008. The new species concept in dermatophytes: a polyphasic approach. Mycopathologia 166: 239-256.
  9. Scott JA, Untereiner WA, Ewaze JO, Wong B, Doyle D. 2007. Baudoinia, a new genus to accommodate Torula compniacensis. Mycologia 99: 592-601.
  10. Scott JA. 2005. Clean-up Procedures for Mold in Houses. Ottawa: Canada Mortgage and Housing Corporation Press, 90 pp.
  11. Untereiner WA, Scott JA, Sigler L. 2004. The Ajellomycetaceae: A new family described to accommodate the genus Ajellomyces and its human pathogenic anamorphs Histoplasma, Blastomyces and Paracoccidioides. Mycologia 96: 812–821.