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The Conversation
The Conversation
Dawn ME Bowdish, Canada Research Chair in Aging & Immunity, McMaster University

COVID-19 vaccine boosters are the best defence: Older adults shouldn’t rely on previous infection for immunity

Covid-19 Vaccine Omicron
Researchers found a surprising twist in a study of Omicron infection in older adults. The new information highlights the importance of COVID-19 vaccine booster shots. (Shutterstock)

Despite researchers’ efforts to understand SARS-CoV-2, the virus continues to hold many secrets. As much as we’ve tried to shoehorn it into our thinking about how respiratory viruses work, it will simply not comply.

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