Cuchculan
You would be tested a few times if you tested positive at any time. To see if it is still in your system. Think about it. If it was still in your system, what would the point be in allowing you back out in public? You start a whole new batch of cases. It continues to go round and round.
If you were never tested and had no idea you had it, Lord knows that would be a bad one. The only chance they have there would be if a friend of yours caught it and mentioned you to them. As in they had contact with you. Most countries try and do the whole trace thing. To get ahead of the virus. So a person tests positive. they ask who they had contact with. Then they try and reach all that person's contacts. Tell them to self isolate.
Good few people don't need hospital at all. So they can remain at home. Once they remain indoors. These would be tested a few times. Until no trace is left in the body.
One thing they are unsure iof is ' can a person catch it a second time '. They still have no answer for that one. If you are allowed home and back out in public you have to follow the same rules as everybody else.
To me it will just keep going round and round until they find a vaccine. That might take a year or two. It won't stop until they find something to stop it with. And let us pretend you had it and showed no symptoms. To me that would be a mild strain of it. Probably the best strain a person could catch. I am sure the experts would not mind everybody having that strain of the virus. Rather than the strain that puts you in the ICU and could kill you.