I don’t know whether they even had any data on change difficulty. I think it was more like - we needed a vaccine yesterday and Moderna and BioNTech had the mRNA technology just ready to be able to spin up a vaccine quickly. And that was good enough to save a lot of people from severe disease.
They definitely had something, I remember reading about it at the time. it might have involved what they knew about previous coronavirus’s as well. Whatever they had though it ended up being wrong.
I don’t know whether they even had any data on change difficulty. I think it was more like - we needed a vaccine yesterday and Moderna and BioNTech had the mRNA technology just ready to be able to spin up a vaccine quickly. And that was good enough to save a lot of people from severe disease.
They definitely had something, I remember reading about it at the time. it might have involved what they knew about previous coronavirus’s as well. Whatever they had though it ended up being wrong.