I am speculating. It's really hard to convince large.... Pharmaceutical companies, on average, would have the greatest capacity and resources to roll out anything super fast. They have their feet on the ground. They can do clinical trials. They have manufacturing capacity, etc. However, with the vaccine world, pandemics come and go, as we saw previously with the SARS issue. It came about and then it sort of dissipated.
With regard to putting in a lot of resources, there's not a lot of enticement for pharmaceutical companies to do that unless they get some useful information out of it. Through this pandemic, they have gotten a lot of data on the safety and efficacy of these viral vectors. I think that was the big draw, and why we didn't....
There are those inactivated vaccines, as I mentioned. If you have the capacity to make your own type of vaccine, you wouldn't be beholden to these other potential interests.