- Pop Med Bldg. 201
Professor | DVM, DVSc, (Guelph), Dip ACVP
I teach POPM*6350 Safety of Foods of Animal Origin, POPM*6540 Concepts in Environmental Health, POPM*6560 MPH Practicum and co-teach POPM*4040 Epidemiology of Foodborne Diseases. My research focuses on the epidemiology of foodborne infections in food animal populations, particularly E. coli and antibiotic resistant organisms, but also Salmonella and other pathogens. I have extensive experience in conducting epidemiological studies in cattle, poultry swine and other food animal species and has also participated in a number of studies of zoonotic infections in companion animals and in humans, including antimicrobial resistance in commensal and pathogenic bacteria. My research on antimicrobial resistant bacteria, Salmonella and E. coli O157:H7 and related organisms focuses on the distribution of fecal shedding in animals, and risk factors for infection in animals and humans. I also study the determinants of selection and assessment of human health risks from antimicrobial use in animals. I consult on food safety, antibiotic resistance, epidemiology and other veterinary public health matters with a number of governmental and non-governmental organizations at the provincial, national and international levels, notably various food animal industry groups, the Public Health Agency of Canada, Health Canada, the United States Food and Drug Administration, the Centers for Disease Control, the Alliance for the Prudent Use of Antibiotics (APUA), and the World Health Organization (WHO).
My research group focuses on the epidemiology of foodborne and waterborne infections in animal and human populations. We have particular interests in E. coli O157:H7, Salmonella, Campylobacter and antibiotic resistant organisms. We seek to better understand the dynamics of these infections in animals and humans, to determine risk factors for infection, and to evaluate methods of control. I like to work with graduate students and have supervised or co-supervised over 40 MSc and 20 PhD students.
Current Graduate Students
I teach graduate courses POPM*6350 Safety of Foods of Animal Origin and POPM*6540 Concepts in Environmental Health, coordinate POPM*6560 MPH Practicum and POPM*6590 Public Health Practicum II, and teach the undergraduate course POPM*4040 Epidemiology of Foodborne Diseases.
Professional Experience & Honours
Last 5 years:
- Chair, International Assessment of Research at the National Food Institute of the Technical University of Denmark, Mørkhøj, January 2015.
- Chair, 6th Meeting of the WHO Advisory Group on Integrated Surveillance of Antimicrobial Resistance 10-12 June 2015, Seoul, South Korea.
- Invited international expert. Workshop on associations between antimicrobial use and the prevalence of resistant micro-organisms: Is it possible to benchmark livestock farms based on resistance data? Netherlands Veterinary Medicine Authority. Utrecht, The Netherlands. June 2015.
- Co-chair, Guideline Development Committee. WHO guidelines on use of medically important antimicrobials in food-producing animals. 2016-17.
- Invited expert. FAO/WHO expert meeting in collaboration with OIE on foodborne antimicrobial resistance: Role of environment, crops and biocides. Rome, Italy, 11-15 June 2018.
- Member, WHO Advisory Group on Integrated Surveillance of Antimicrobial Resistance. 2009-18.
- Chair, International Assessment of Research at the National Food Institute of the Technical University of Denmark, Mørkhøj, January 2020.
Search PubMed for additional publications by Dr. McEwen.