NPR

A COVID vaccine grown in plants measures up

A COVID-19 vaccine from a Canadian biotech firm has been found effective at preventing moderate to severe disease. It could soon become the first plant-based vaccine authorized for human use.
Dr. Naresh Aggarwal talks in April with Jennifer Bain, who volunteered for a study of Medicago's COVID-19 vaccine in Toronto.

A Canadian biotech firm is reporting positive results from a large study of its COVID-19 vaccine. What makes it unusual is that the key ingredient of the vaccine is grown in plants.

has already developed an experimental flu vaccine in a plant related to tobacco. When the pandemic struck, the company decided to

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