Man cleared of virus reinfected and not showing symptoms

The Centre for Health Protection (CHP) is trying to establish whether a man has been infected with the coronavirus, again, four months after he was cured and discharged from a hospital, RTHK reports.
The 33-year-old IT worker was confirmed with the coronavirus in March, and discharged in mid-April after treatment and testing negative for the virus.
He then traveled to Spain via London earlier this month and tested positive for the virus when he came back to Hong Kong on Saturday. He is now at the AsiaWorld Expo community treatment facility.
The centre's Dr Chuang Shuk-kwan said the patient was asymptomatic.

Blood tests and genetic sequencing tests would be done to check if he has been re-infected.
"I think there are two main possibilities; either he's a persistent [carrier] of the virus but he has been tested negative during discharge, and the second possibility is re-infection so I think this needs to be thoroughly studied by experts and with more tests," Chuang said.