(a) The ability to produce hundreds of millions of doses.
(b) Tests that prove (as convincingly as we can) that the vaccine are safe.
I don't see any evidence that anyone has any idea how to do better at either (a) or (b).
(a) The ability to produce hundreds of millions of doses.
(b) Tests that prove (as convincingly as we can) that the vaccine are safe.
I don't see any evidence that anyone has any idea how to do better at either (a) or (b).