In this picture taken on Oct 4, 2020, a man waits for the results of a mandatory COVID-19 coronavirus test given to all arrivals at Hong Kong International Airport.
(ANTHONY WALLACE / AFP)

HONG KONG – Hong Kong health authorities have linked the COVID-19 infection of a 27-year-old man to three previous imported cases as the Centre for Health Protection managed to locate the origin of the previously untraceable Delta variant case.

The patient, a ground worker at the Hong Kong airport, last went to work on June 16. Latest genetic sequencing showed his infection was related to three women flying in from Indonesia on June 11, according to the CHP.

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The announcement came as Hong Kong logged four imported COVID-19 cases on Friday, pushing the city’s tally to 11,909.

The four cases involved a 20-year-old man and a 22-year-old woman from the United Kingdom, a 37-year-old woman from Indonesia and a 56-year-old man from Bangladesh.

In another development, a 19-year-old local woman who flew to London has tested positive for COVID-19. The CHP cited the United Kingdom health authorities as saying that she tested positive on June 16, three days after arriving in London, but tested negative on Tuesday.

The government said her residence in Hong Kong – Springdale Villas Tower 2 in Yuen Long – would be put under a compulsory testing notice.

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