I got my best information about the COVID-19 virus and vaccines from the You Tube series by the Ninja Nerd Zachary Murphy. This one titled, “COVID-19 Vaccines: MODERNA | PFIZER/BIONTECH | and ASTRAZENECA,” is very thorough.
Zachary Murphy is currently working as a physician in the neurocritical care unit at Lehigh Hospital in eastern Pennsylvania. That unit takes care of patients following neurological catastrophes like large vessel ischemic strokes and cerebral hemorrhages.
https://www.youtube.com/watch?v=35Idb_lCU4o
First of all, you’re welcome for the information.
Second, when people post links to youtube in these threads, usually the links go to some nutcase who has decided to devote himself to spreading antivax misinformation.
The video you linked is not like that. I’m not going to watch the whole thing (after all, he’s describing my career before I retired), but so far, I see a white board filled with pertinent graphics and a description of the early testing process. So, I’m very glad for you that you found a source of accurate information rather than some advocate for antivax/charlatan propaganda.
I spent time in early drug development, among other things. Since I did not decide to go into pharma, my career took a number of interesting and unusual paths.