Well here are some sources and further reading:
https://www.vaccines.gov/basics/types
https://www.sciencehistory.org/historical-profile/louis-pasteur
https://www.vbivaccines.com/wire/louis-pasteur-attenuated-vaccine/
RNA vaccine explainer from Moderna: https://www.youtube.com/watch?v=qJlP91xjvsQ
A longer essay I wrote: https://rootsofprogress.org/smallpox-and-vaccines
Well here are some sources and further reading:
https://www.vaccines.gov/basics/types
https://www.sciencehistory.org/historical-profile/louis-pasteur
https://www.vbivaccines.com/wire/louis-pasteur-attenuated-vaccine/
RNA vaccine explainer from Moderna: https://www.youtube.com/watch?v=qJlP91xjvsQ
A longer essay I wrote: https://rootsofprogress.org/smallpox-and-vaccines