Catharine Chambers is a PhD candidate in epidemiology and Vanier Scholar at the Dalla Lana School of Public Health at the University of Toronto.
Despite high vaccination coverage, COVID-19 cases are increasing in parts of Canada and experts are predicting a fourth wave this fall (or sooner). Here's why.
An epidemiologist breaks down the differences between short-term clinical trials and observational studies, and what each type of inquiry can tell us about how well vaccines work and how long they will last.
We’ve all seen the headlines linking COVID-19 vaccines to rare blood clots. While this development may be worrisome, it is a reassuring sign that vaccine safety surveillance is doing its job.
Health-care providers vaccinated against COVID-19 describe not just the physical side effects, mostly mild and short-lived, but also the emotional side effects: relief, excitement, and hope.
Do you have questions about vaccines in Canada? Epidemiologist Catharine Chambers compares the four vaccines now approved in Canada.