A vaccine (toxoid) against diphtheria first became available in Toronto in 1926. Thanks to the work of the Toronto Diphtheria Committee, the city was diphtheria-free by 1940. (Shutterstock) May 31, 2018 How to increase childhood vaccination rates Catherine Carstairs, University of Guelph; Bethany Philpott, Queen's University, Ontario, and Caitlin Fendley, Purdue University Toronto’s fight against diptheria teaches us the powerful impact of public health campaigns – in persuading parents to vaccinate their children.
