When the first round of COVID-19 vaccines arrived in late 2020, millions of unprotected Canadians rushed to get a shot as soon as they could. Nearly two years later, updated vaccines — which target the dominant Omicron family of variants — are rolling out across the country. “Now what we have are different people who’ve been vaccinated at different times, maybe even with different vaccines. To make sense of the best approach, CBC News spoke to a slate of medical experts — including infectious disease specialists, immunologists and virologists — and reviewed the latest guidance from Canada’s top vaccine advisers. Or keep reading to learn the science behind how to time your next booster to ward off a COVID infection as long as possible.

Source: CBC News October 07, 2022 22:42 UTC