Forty four guests who were quarantined at Four Points by Sheraton Hong Kong, Tung Chung have to be transferred to Penny's Bay quarantine center, after 13 environmental samples at the hotel tested positive of the coronavirus.

After two people who stayed on the 15th floor of the hotel were confirmed with Covid-19 with identical genetic sequences on November 7 and last Thursday, the Centre for Health Protection collected 73 environmental samples last Friday from the rooms concerned and common areas on the same floor.

Among the 73 samples, 13 tested positive, including five taken inside Room 1515 and eight from Room 1517. Another eight samples tested indeterminate - three from Room 1515 and five from Room 1517.

Forty-four guests who stayed from November 1 to 6 on the floor concerned of the North Wing in the hotel were transferred to the Penny's Bay to undergo compulsory quarantine.

The announcement came as Hong Kong reports one more imported case on Tuesday.

A 21-year-old woman who arrived from India via flight AI1314 on November 14 was tested positive upon arrival at the airport.

In addition, the CHP is continuing to follow up on the three imported cases involving local cargo crew with the L452R mutant strain.

The latest whole-genome sequencing analysis found that the three were very likely to be infected during their stay in the hotel in Germany considering their almost identical genetic sequences.

Follow-up actions on the cases concerned are ongoing.

Forty four guests at Sheraton's Tung Chung hotel sent to Penny's Bay quarantine center. file photo.