I hope in the future we would be able to have more testing. Would it be possible to test people after the pandemic to see if they had the virus?
Yes, this is point of antibody testing. We now have antibody testing; however, this does not mean that someone is immune to the virus. This means only that someone has mounted an adaptive immune response; it does not show if that response was effective at eliminating the virus. We talked about neutralizing antibodies. If someone is making antibodies but those antibodies are not neutralizing, then the antibody that they made is not going to work if they get infected again.