It's been a while since I went through the whole vaccine landscape (I've been putting it off!), but there's a lot to catch up on. I'm going to incorporate some slightly reworked material from my July post in the introduction to each vaccine class, for reference, but everything on the candidates themselves is updated information. That earlier post includes more background on each specific candidate that I won't be repeating here.
Viral Vectors
This class uses some other infectious virus, but with its original genetic material removed. In its place goes genetic instructions to make