Thirty 'unusual' preliminary positive cases prompt investigation

Local | 22 Apr 2021 6:04 pm

Health officials said they are now investigating a laboratory processing Covid tests run by BGI, after 30 preliminary positive cases were detected by the lab on a single day.

The Centre for Health Protection's principal medicine and health officer for epidemiology, Albert Au Ka-wing, said the samples were collected from individuals living in different buildings across the city, which authorities considered it “unusual.”

He added the government has already asked government advisor on the pandemic and top microbiologist, Yuen Kwok-yung to inspect the laboratory in question.

Au said it is “a bit strange” seeing 30 cases being detected by the same lab on the same day.

“There are two possibilities. The first is that some of these cases are true positive cases, and there is silent transmission or even outbreak in the community which had not been detected before,” he said.

“Another possibility is that some of these cases are false positive, but for the reasons why they tested positive but negative after admission to hospital – that requires further investigation,” said Au.

However, he said the cases will still be handled the same way as confirmed cases, in which officials will put those involved in isolation and conduct contact tracing to put their close contacts under quarantine.

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