Tiffany Fitzpatrick



“Working at PHO as an Epidemiologist/Scientist provides me a unique opportunity to be at the interface of public health policy, practice, and research and generate evidence that can directly inform the needs of practitioners and improve the health of Ontarians.”

Areas of Expertise

  • Epidemiology of infectious diseases
  • Respiratory syncytial virus (RSV)
  • Epidemiological and mathematical modeling methods
  • Health equity
  • Health administrative data and data linkage

Academic Degrees and Accreditations

  • Doctor of Philosophy (Epidemiology), University of Toronto
  • Master of Public Health (Epidemiology), University of Toronto

PHO Research Interests

  • Surveillance and epidemiology of respiratory viruses
  • Mathematical modeling
  • Epidemiological methods
  • Use of administrative and laboratory data to study population health outcomes
  • Public health policy and program evaluation

PHO Research Activities

  • Collaborating on studies using wastewater surveillance to understand trends in SARS-CoV-2 and other pathogens of interest in Ontario
  • Supporting mathematical and statistical modeling projects to understand the transmission of SARS-CoV-2 in Ontario
  • Leading studies to inform population-based approaches for preventing severe, early-life RSV illness

Selected Publications

  1. Fitzpatrick T, Wilton A, Cohen E, Rosella L, Guttmann A. School reopening and COVID-19 in the community: evidence from a natural experiment in Ontario, Canada. Health Aff (Millwood). 2022;41(6):864-72.
  2. Fitzpatrick T, McNally JD, Stukel TA, Lu H, Fisman D, Kwong JC, et al. Family and child risk factors for early-life RSV illness. Pediatrics. 2021;147(4):e2020029090.
  3. Fitzpatrick T, McNally JD, Stukel TA, Kwong JC, Wilton AS, Fisman D, et al. Palivizumab's real-world effectiveness: a population-based study in Ontario, Canada, 1993-2017. Arch Dis Child. 2021;106(2):173-9.
  4. Fitzpatrick T, Malcolm W, McMenamin J, Reynolds A, Guttmann A, et al. Community-based antibiotic prescribing attributable to respiratory syncytial virus and other common respiratory viruses in young children: a population-based time-series study of Scottish children. Clin Infect Dis. 2021;72(12):2144-53.
  5. Fitzpatrick T, Rosella LC, Calzavara A, Petch J, Pinto AD, Manson H, et al. Looking beyond income and education: socioeconomic status gradients among future high-cost users of health care. Am J Prev Med. 2015;49(2):161-71.

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Updated 23 Jan 2024