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Fear that delayed second COVID-19 vaccine dose could lead to new variants realistic
by Jacob Serebrin, The Canadian Press
Posted Feb 3, 2021 5:08 pm EDT
Last Updated Feb 3, 2021 at 5:14 pm EDT
MONTREAL Experts say delaying the second dose of some COVID-19 vaccines could lead to the emergence of new variants of the virus but there’s no sign it has happened yet.
“It’s a theoretical, realistic possibility, but there is no evidence so far,” said Dr. Andre Veillette, a professor at the Universite de Montreal and the director of the Molecular Oncology Research Unit at the Montreal Clinical Research Institute.
Veillette, who is a member of the federal government’s COVID-19 vaccine task force, said there’s a concern that the immunity provided by one dose of the Pfizer-BioNTech and Moderna vaccines “is not as strong as you would get with two doses.”
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