Taipei, A Taiwanese who recently tested positive for COVID-19 in Shanghai was a previous patient who recovered from the disease in Taiwan and is no longer contagious, the Central Epidemic Command Center (CECC) confirmed Friday.
It is likely that the individual, a man in his 30s, received the “weak positive” test result in Shanghai on Dec. 30 due to the remaining existence of dead virus, said Lo Yi-chun (羅一鈞), deputy chief of the CECC’s medical response division, at a news conference.
It usually takes 80-100 days for patients to completely release the virus even after their recovery, which makes it possible for test results to continue rotating between positive and negative for a while, he said.
The man does not pose any risk, and there is no need to follow up with his previous contacts, Lo said.
The man, who had been working in the Philippines since December 2019, first developed suspicious symptoms there on Oct. 14, 2020, according to Lo.
The man tested negative upon his arrival in Taiwan on Oct. 25, although he reported some symptoms.
He developed more symptoms, such as soreness and coughing with chest pains on Oct. 26 and then tested positive for the disease, Lo said.
The man was deemed to have recovered on Nov. 19 after receiving two consecutive negative tests, and he was discharged from the hospital, after which he flew to Shanghai, according to Lo.
The company he works for has voluntarily tested 20 of the man’s contacts. A total of 16 have generated negative results while the other four have yet to get their results back, but the CECC does not expect any of them to test positive, Lo said.
Source: Focus Taiwan News Channel