Your 4th dose questions answered

Who should be getting jabbed for COVID-19 a fourth time — and when? We try to clear up the questions around “second boosters” and “fourth doses” as the BA.5 variant surges in Canada.
The first vial of paediatric COVID-19 vaccine used in Toronto. Children who are part of the Hospital for Sick Children family between the ages of 5 and 11 years of age are some of the first to get vaccinated for COVID-19 at the Metro Toronto Convention Centre, in Toronto, Tuesday, Nov. 23, 2021. THE CANADIAN PRESS/Steve Russell, POOL (The Canadian Press)

Canada's latest COVID-19 surge is being fuelled by the BA.5 variant. It's prompting some public health officials to make fourth jabs of a COVID-19 vaccine available to all adults. While most provinces are already offering fourth doses to their most vulnerable residents, some — such as New Brunswick, Quebec and P.E.I. — are urging the general adult population to sign up as well. 

However experts are divided about the urgency at which Canadians should receive a second boost, and when.

Prof. Raywat Deonandan is an epidemiologist specializing in global health at the University of Ottawa. He breaks down what we need to know about the future of COVID-19 vaccination. 

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