The Lancet | Commentary | November 2020

The field of plant-derived vaccines has grown a lot in the past 28 years, since it was first shown that viral proteins could be expressed in plants. There is one licensed plant-derived human therapeutic for Gaucher's disease, but this is the first time a plant vaccine has been tested in a clinical trial. It is a milestone for this technology and sows the seeds for other plant-based vaccines and therapeutics.
https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(20)32010-9/fulltext