Trudy Wassenaar isa member of the Editorial board of:
- Journal of Applied Microbiolgy
- Letters of Applied Microbiology
She is a referee for a number of journals, including:
- Microbiology UK
- Gut Pathogens
- Antimicrobial Resistance and Infection Control
- PLoS One
- Applied and Environmental Microbiology
- Journal of Applied Microbiology
- Medical Microbiology and Immunology
- Emerging Infectious Diseases
- Journal of Infectious Diseases
She has acted as a referee for chapters in the following books: Environmental Microbiology and Ecology (Blackwell); Campylobacter, 2nd Edition (ASM Press).
External examiner of Ph.D. theses from: RMIT University, Sydney, Australia; Utrecht University, The Netherlands; University of Cape Town, South Africa, Complutensa University of Madrid (UCM), Madrid, Spain.