Skip Ribbon Commands
Skip to main content
We are currently experiencing intermittent issues impacting registration and login including access to online learning. We apologize for any inconvenience.
PHO Grand Rounds: Pertussis vaccination: How well does it work in Ontario and how do we know?
Tuesday, September 26, 2017 12:00 pm to 01:00 pm
Venue: 661 University Ave, 17th floor, Toronto ON Boardroom 17-53
Infectious Diseases:Pertussis; Infectious Diseases
City: Toronto
Type: PHO Grand Rounds
Format: In Person; Webinar
Note: This is an open invitation, and may be forwarded to interested parties.
We will present results of a study of pertussis vaccine effectiveness in Ontario derived from the first study in Ontario to make use of integrated Public Health Information System (iPHIS) data (2006-15) linked to Canadian Institute for Health Information (CIHI) administrative data at the Institute for Clinical Evaluative Sciences (ICES). The findings we will discuss are part of a Canadian Immunization Research Network funded study of pertussis vaccine effectiveness in Canada. This session builds upon previous PHO presentations on a conceptual model of vaccine effectiveness and pertussis epidemiology in Ontario. Our results will illustrate some of the key concepts that underpin vaccine effectiveness research. We will compare and contrast results with a previous test negative study design that was published in 2016. We will discuss characteristics of surveillance case definitions and laboratory reporting that affect vaccine effectiveness estimates particularly through their impact on the sensitivity and specificity of case ascertainment.

Presenter: Dr. Natasha Crowcroft

Dr. Natasha Crowcroft is Chief of Applied Immunization Research and Evaluation at Public Health Ontario, and Professor in Laboratory Medicine and Pathobiology and the Dalla Lana School of Public Health, University of Toronto. She trained in medicine and public health at the Universities of Cambridge and London, UK, and in the European Programme for Intervention Epidemiology Training in Belgium. She has more than 25 years’ experience in public health, the last decade in Canada. Her research aims to maximize the health benefits of immunization. She has published over 200 scientific papers and is an expert for the World Health Organization.

Public Health Ontario Rounds are approved for continuing medical education from the Royal College of Physicians and Surgeons. PHO Grand Rounds are also approved by Council of Professional Experience for professional development hours (PDHs) for members of the Canadian Institute of Public Health Inspectors (CIPHI). For more information, contact


Stay up-to-date on upcoming events and calls for abstracts by visiting our calendar.
If you have submissions, or questions or comments about the items above, send them to
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 .

Uncontrolled print copy. Valid only on day of Print: [date]
Page updated on [date/time] 2017-09-14 10:47 AM
© , Ontario Agency for Health Protection and Promotion