Scientifically, yes? First do we have conclusion that people are immune to coronavirus once infected? Isn't the disease too new to know that? Secondly have we d

Scientifically, yes? First do we have conclusion that people are immune to coronavirus once infected? Isn't the disease too new to know that? Secondly have we done any experiments and have any evidence that this will work in a smaller scale? Any scale? I thought science is about evidence and repeatability. If anything this will be a large scale human experiment at best without any informed consent given.