Well, what kind of test? The FDA/CDC withdrew the early PCR test months ago since it was invalid -- since the folks who created the test had not isolated Covid they jimmied something up using flu virus bits. So, the early PCR test confirmed the presence of flu, nothing else.
And, the vax confers no immunity. So, of course you can get re-infected. Showing no symptoms might just mean that the fake vax continues to protect HIM! No one else, tho.

As to the meaning of this mess, it is a soup of fake CNN news. It has devolved into that state. Which, BTW, is perfect for would-be tyrants.

??????? So Tired of this Testing - - - so what - - - if he has no symptoms then he is not sick...... why lock up a country for such nonsense????

Super spreader