Media Centre
Our spokespeople are leading experts on public health issues like immunization, environmental and occupational health, health promotion, infection prevention and control, potential health emergencies, infectious diseases and more. Contact Media Relations to set up an interview or for more information.
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media@oahpp.ca
Or call us as 647-260-7247
Monday to Friday 8:30 a.m. to 4:30 p.m. ET
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Dr. Angela Ma
Clinical Microbiologist
Research Focus:
- Molecular microbiology
- Mycobacteriology
- Molecular epidemiology
- Antimicrobial resistance

Dr. Antoine Corbeil
Medical Microbiologist
Research Focus:
- Molecular Epidemiology
- Enteric Diseases
- Global Health
- Parasitology
- Quality

Dr. Austin Zygmunt
Public Health Physician
Research Focus:
- Sexually transmitted and blood borne infections (STBBIs) including mpox
- Social determinants of health, marginalization, and health inequity
- 2SLGBTQ+ health

Dr. Bradley Langford
Pharmacist Specialist
Bradley is a pharmacist specialist in the antimicrobial resistance and antimicrobial stewardship (AMR/AMS) program at Public Health Ontario.
He leads applied research and surveillance on antimicrobial use and resistance trends, and supports the design, implementation, and evaluation of stewardship initiatives across health care settings in Ontario.
His expertise includes antimicrobial stewardship, evidence synthesis, and knowledge translation, with a focus on developing practical tools that support public health decision making and promote appropriate antimicrobial use to reduce the harms of antimicrobial resistance.

Dr. Brendan Smith
Scientist
Research Focus:
- Social epidemiology
- Population health intervention research
- Interventions to prevent chronic disease and reduce health inequities
- Alcohol policy
- Public health systems

Dr. Christine Navarro
Public Health Physician
Research Focus:
- Enteric diseases
- Immunization
- Vaccine preventable diseases
- Outbreak investigation
- Communicable disease surveillance

Dr. Curtis Russell
Senior Program Specialist
Research Focus:
- Vector-borne diseases
- West Nile Virus and Zika Virus
- Lyme disease
- General insect biology

Dr. Elaina MacIntyre
Epidemiologist Specialist
Research Focus:
- Environmental epidemiology
- Environmental hygiene
- Cancer clusters
- Radon
- Air pollution

Dr. Erin Hobin
Senior Scientist
Research Focus:
- Population health intervention research
- Experimental and quasi-experimental studies
- Interventions to prevent and reduce chronic disease risk factors and improve health equity
- Alcohol policy
- Integrated knowledge translation

Dr. Jessica Hopkins
Vice President and Chief, Communicable Disease Control
Research Focus:
- Public health
- Communicable diseases
- Surveillance and epidemiology
- Public health policy
- Public health workforce burnout and resilience

Dr. Jeya Nadarajah
Physician Lead
Jeya is an Infection Prevention and Control Physician and Physician Lead in Communicable Disease Control at Public Health Ontario.
She is dually trained as an Infectious Diseases Specialist and Medical Microbiologist, bringing nearly 15 years of experience in clinical care, laboratory and healthcare leadership.
Her expertise spans clinical infectious diseases, medical microbiology, infection prevention and control, and antimicrobial stewardship, with a strong focus on advancing equitable system-wide practices and improving healthcare outcomes.

Dr. JinHee Kim
Physician Lead
Research Focus:
- Public health assessment and management of environmental hazards and exposures
- Clusters of non-communicable diseases
- Food safety
- Legionella
- Risk communication
- Environmental burden of disease

Dr. Julianne Kus
Deputy Chief, Microbiology and Laboratory Science
Research Focus:
- Molecular microbiology
- Genomic epidemiology
- Outbreak analysis
- Bacteriology
- Mycology
- Antimicrobial resistance mechanisms

Dr. Karl Kabasele
Public Health Physician
Research Focus:
- Health communication
- Smoking cessation
- Medical education
- Public health education through broadcast media
- Frontline public health management

Dr. Katherine Paphitis
Enteric, Zoonotic Specialist
Katherine is a certified Public Health Inspector and epidemiologist with nearly 20 years of experience in public health.
She holds a PhD in Population Medicine, a Master of Science in Epidemiology, and undergraduate degrees in Animal Biology and Public Health & Safety. Katherine also holds an international designation in infection control and epidemiology (CIC® (Certification in Infection Control)).
Her work focuses on communicable disease epidemiology in Ontario, with expertise in One Health, public health surveillance and outbreak response, and enteric and zoonotic diseases, including salmonellosis and rabies.

Dr. Kevin Schwartz
Physician
Research Focus:
- Antimicrobial stewardship
- Audit and feedback
- Administrative data
- Epidemiology
- Vaccines

Dr. Liane Macdonald
Physician Lead
Research Focus:
- Communicable disease control, prevention and risk assessment
- Blood-borne infections, respiratory diseases, and enteric and zoonotic diseases
- Infectious disease surveillance and epidemiology
- Knowledge synthesis and knowledge translation
- Public health program evaluation, policy analysis and strategy development

Dr. Maan Hasso
Medical Microbiologist
Research Focus:
- Molecular diagnostic in microbiology
- Emerging pathogens
- Antimicrobial resistance testing
- Mycobacterium tuberculosis
- Quality in laboratory medicine

Dr. Mark P. Nelder
Senior Program Specialist
Mark provides expert advice and consultative services to Ontario's public health units on vectors and vector-borne diseases.
He received his doctoral degree in medical and veterinary entomology from Clemson University, studying the ecology of ectoparasites, biting flies, and pathogens in zoos. In addition, Mark held a post-doctoral position at Rutgers University studying the ecology and management of the invasive tiger mosquito.
Mark’s research interests and expertise include mosquito and tick ecology, epidemiology of vector-borne diseases, risk assessments, and the history of vector-borne diseases.

Dr. Michelle Science
Physician
Research Focus:
- Infectious Disease
- Infection Prevention and Control
- Pediatric
- Vaccines
- Epidemiology

Dr. Reed Morrison
Public Health Physician
Research Focus:
- Vaccine preventable diseases
- Communicable disease control and prevention
- Northern and rural health

Dr. Richard Mather
Public Health Physician
Research Focus:
- Communicable disease control and prevention, with a focus on vector-borne diseases, zoonotic diseases and influenza
- Infectious disease surveillance and epidemiology
- Outbreak management

Dr. Samir Patel
Vice President and Chief, Microbiology and Laboratory Services
Research Focus:
- Antimicrobial resistance
- Hospital-associated infections
- Zoonotic diseases

Dr. Sarah Wilson
Deputy Chief, Medical and Systems Support, Communicable Disease Control
Research Focus:
- Vaccine program evaluation
- Data linkage studies to enhance immunization coverage assessment
- Vaccine-preventable diseases, including measles

Dr. Shawn Clark
Clinical Microbiologist
Research Focus:
- Molecular microbiology
- Antimicrobial resistance
- Antimicrobial susceptibility testing
- Arthropod-borne and zoonotic viruses

Dr. Shelly Bolotin
Scientist
Research Focus:
- Vaccine-preventable diseases
- Population immunity
- Sero-epidemiology
- Microbiology

Dr. Vanessa Tran
Clinical Microbiologist
Research Focus:
- Molecular microbiology
- Molecular diagnostics
- Bloodborne viruses
- Molecular epidemiology
- Serology

Dr. Yasmin Khan
Physician
Research Focus:
- Public health emergency preparedness
- Health system emergency management
- Health systems research
- Implementation science
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