Interesting. I watched a video on the vaccines, and although Pfizer and Moderna are mRNA based, Astra-Zeneca is apparently DNA-based. It uses a carrier virus to get the DNA into your cells, whereas mRNA vaccines just tell your cells to manufacture a protein, and then once the mRNA decays, that stops. Not sure I would want to take the Astra Zeneca. The other downside to it is that people will build immunity to the carrier virus, so they'll constantly have to be inventing new ones.