Viral vector vaccines have a bit more real-world testing than mRNA vaccines, but they certainly aren't "traditional": there are only a few vaccines developed wi

Viral vector vaccines have a bit more real-world testing than mRNA vaccines, but they certainly aren't "traditional": there are only a few vaccines developed with this technology--for Dengue fever and Ebola--that have ever been authorized for use, and most within the last couple years; the classic notion of a vaccine--and all of our "traditional" vaccines--are either inactive or attenuated strains.