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PHO Rounds: A Review of the Epidemiology of Clostridium difficile Infection (CDI) in Ontario, Presented by Dr. Doug Sider and Agnes Tong
Tuesday, November 1, 2011 12:00 pm to 01:00 pm
Venue: 480 University Ave. Suite 300, Toronto, ON M5G 1V2 Boardroom 350 & Webinar


Clostridium difficile infection (CDI) is an important cause of health care-associated infection. The Government of Ontario introduced public reporting on eight patient safety indicators as part of a comprehensive plan to create transparency in Ontario’s hospitals. CDI was the first of the eight indicators to be publicly reported in September 2008. This is a review of the epidemiology of CDI in Ontario, including data from the patient safety indicator reporting and CDI outbreaks in hospitals. This will be followed by a discussion of issues such as the roles of the Infection Control Resource Teams (ICRTs), Regional Infection Control Networks, and the Public Health Ontario Laboratories during CDI outbreaks. Other issues such as current and novel laboratory diagnostics for CDI, as well as future directions will be discussed.


Agnes Tong is the hospital infection epidemiologist on the Surveillance and Epidemiology team at Public Health Ontario. She works on a number of CDI-related and other hospital-associated infections projects.  She also works closely with the Infectious Disease Prevention and Control team. Before joining Public Health Ontario, Agnes held a number of positions at Mount Sinai Hospital as a hospital epidemiologist and an infection control practitioner. She has also worked for the Public Health Agency of Canada, the Toronto Central Infection Control Network, and GlaxoSmithKline as an epidemiology consultant.

Doug Sider is the acting director of the Infectious Disease Prevention and Control team. He joined Public Health Ontario as a public health physician in September 2009. As a former medical officer of health and associate medical officer of health in Ontario and an assistant professor at McMaster University, Doug has a wealth of experience in public health practice in Ontario and abroad, extensive content knowledge, and a genuine desire to enhance the skills of infectious disease prevention and control specialists across the province. 

This is an open invitation, and may be forwarded to interested parties.

Public Health Ontario is committed to complying with the Accessibility for Ontarians with Disabilities Act (AODA). If you require accommodations to participate in this event, please contact 647-260-7100 or


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