Key Takeaways Researchers have developed a plant-based COVID-19 vaccine that has shown to produce a strong antibody response. The vaccine uses plants to create virus-like particles (VLPs), which are non-infectious. Phase 3 clinical trials are underway and the vaccine maker hopes the shot will be available in the U.S. and Canada soon. The first mRNA vaccine approved for human use was developed during the pandemic, and now researchers are working on another first: a plant-based COVID-19 vaccine. Researchers at Quebec-based biotechnology company Medicago and drugmaker GlaxoSmithKline have developed a plant-based vaccine for SARS-COV-2, the virus that causes COVID-19. And their...