Viral vectors are modified viruses that trigger an immune response without causing infection. The vector that’s used in several COVID-19 vaccines was created decades ago by Canadian Frank Graham.
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Various companies use different ingredients and different delivery systems in their COVID-19 vaccines. Researchers are investigating whether it’s better for individuals to mix what’s available.
Behind Canada’s current COVID-19 vaccine shortage is a decades-long tale of unheeded warnings, missed opportunities and dismantled resources that was never going to end well.
A primer on Sinovac, Sinopharm and CanSino, and their prospects for achieving a world first for coronavirus.
Top contributors
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Distinguished University Professor, Department of Pathology and Molecular Medicine, McMaster University
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Professor of Innovation and Strategy, International Institute for Management Development (IMD)
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Joel Lexchin is a Friend of The Conversation.
Professor Emeritus of Health Policy and Management, York University, Canada
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Associate Professor of Biology, Rochester Institute of Technology
