your best chance

When the first round of COVID-19 vaccines arrived in late 2020, millions of unprotected Canadians rushed to get an injection as soon as possible.

Nearly two years later, updated vaccines — targeting the dominant Omicron family of variants — are being rolled out across the country.

And at this point in the pandemic, the immunity landscape is much more complicated.

“We now have different people vaccinated at different times, maybe even with different vaccines. Many people have also been infected and recovered from COVID-19 at different times,” said Dr Isaac Bogoch, an infectious disease specialist at the University Health Network in Toronto.

“So it’s much harder to have a one-size-fits-all approach to vaccine rollout.”

The timing of your next dose now depends on your level of risk and when you were last vaccinated or infected – with federal guidelines suggesting that most Canadian adults should wait about six months before receiving another shot, or about three months in situations where the risk of serious illness is greater.

To understand the best approach, CBC News spoke with a range of medical experts — including infectious disease specialists, immunologists and virologists — and reviewed the latest guidelines from Canada’s top vaccine advisers.

We have divided their advice into a step-by-step process. You can take the quiz below to see how it applies to you. Or keep reading to learn the science behind how to time your next booster to ward off a COVID infection for as long as possible.

Leave a Comment