Probably had the PCR cranked up to 40 and it picked up pieces of the dead virus. That's how false positives and asymptomatic people were testing "positive".Article says he has no symptoms. Why was he tested? Could be a false positive, or he is among the majority who have this, disease so deadly, you need a test to tell you you're sick.
You can get any result you want off the PCR test. It picks up pieces of the dead virus. The inventor of the PCR test himself (Kary Mullis) discussed it.