We're told that there are 834,000 people, vulnerable for a variety of reasons, who would use it. Now, I would have thought that the prospect of selling 834,000 doses at, what is it—we may never know, but let's make it $30 a pop—would have actually motivated Pfizer to submit the data and have it approved. But it seems, for some reason that hasn't been given to us by the Government advancing this bill, that Pfizer are not approaching countries with a rationale for a fourth dose to be allowed under their regulatory systems. I think that's a question that the Government is going to have to provide answers to. Why is it that the Government is keener to get these doses approved than the manufacturer? That is a wrinkle that I don't think has been properly explained. 