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Regal Airport Hotel is the first patient to wear "valve masks" suspected of spreading the virus

2021-11-22T14:52:48.680Z


Airborne transmission is suspected at Regal Airport Hotel in Chek Lap Kok! The Center for Health Protection stated that a 36-year-old man and a 62-year-old man were quarantined on the 5th floor of the hotel. The two lived in a room diagonally opposite to each other. Afterwards, the two were diagnosed and sequenced.


Airborne transmission is suspected at Regal Airport Hotel in Chek Lap Kok!

The Center for Health Protection stated that a 36-year-old man and a 62-year-old man were quarantined on the 5th floor of the hotel. The two lived in the diagonally opposite room. After that, the two were diagnosed. The genetic sequencing results showed that the two virus genes are identical. Therefore, Suspected the spread of the hotel.

Professor Yuan Guoyong of the Department of Microbiology of the University of Hong Kong visited the site tonight (22nd) and said that when the 36-year-old man opened the door half of the time he did not wear a mask. Even if he did, he only wore a "valve mask". Can not stop the air with the virus from spraying out. It is called a "selfish mask." Yuan Guoyong urged the public not to wear this kind of mask.


Ou Jiarong, chief physician of the Epidemiology Department of the Department of Infectious Diseases of the Center for Health Protection, said that the 12388th case was a 36-year-old Indian man who came to Hong Kong from South Africa on November 11 and was quarantined in Room 5112 of the Regal Airport Hotel on November 13. The sample collected on the day was positive, with a CT value of 18, indicating a high virus load.

The 12404th case was a 62-year-old Chinese man who came to Hong Kong from Canada on November 10 and lived in Room 5111. It was not tested positive until November 18. The CT value of this sample was 19-20, the virus load Also high.

Both of them were infected with the N501Y variant virus. Today's genetic analysis results show that the two viruses are genetically identical.

Ou Jiarong said that the two cases appeared in the hotel from November 11 to 14. It is now suspected that there has been transmission during this period.

Yuan Guoyong pointed out that it is estimated that the 36-year-old man was the original case because he claimed that he did not wear a mask half of the time when he opened the door during the quarantine period. "Valve mask", although it can filter the inhaled air, but cannot filter the air ejected by the patient himself, so it may still spread the virus into the corridor air, and he opens the door to fetch meals, throws out garbage, fetches objects, etc., or opens the door for a day Up to 6 times.

Yuan Guoyong continued, according to the smoke test, although two-thirds of the air above the door is blown into the room from the corridor to reach a negative pressure, the bottom one-third of the air can be blown out of the corridor from the room, and the virus always has a chance to pass through the turbulence effect. Out of the corridor.

In addition, the air near the two rooms is relatively static, and after the virus floats out, it can stay for a period of time.

There are 150 rooms on the 5th floor, but only two air cleaners are not enough.

He pointed out that although other possibilities have not been completely ruled out, it is believed that airborne transmission has the greatest opportunity.

He pointed out that all citizens should no longer use "valve masks", but should wear surgical masks, and appealed to airline staff, customs, health department staff, and hotel staff to persuade them to change if they see passengers using this mask.

In addition, the Electrical and Mechanical Services Department believes that the hotel should place six air purifiers on the fifth floor and increase the supply of fresh air in the four corners.

As for the negative pressure of the room, Yuan Guoyong pointed out that the hotel was completed in 1999, or due to the requirements of the law of that year, the rate of the pumping only reached 10 to 11, but the current law has already required it to reach 18, so it needs to be improved.

He said that at present, all quarantine persons are required to wear masks when opening the door of the house. If anyone finds out, those who do not wear a mask should be warned.

Ou Jiarong said that between November 11 and 14, 28 quarantine persons appeared in this potentially spreading environment. Among them, 7 were still under quarantine, and 21 had completed quarantine and entered the community. The authorities have contacted them.

He said that since the people in the three rooms on the left and the three rooms on the right of the two rooms are at higher risk, they will be required to quarantine for an additional 14 days. November 15 is used as the first day to calculate. There are 12 rooms involved, but it is unknown. How many people have entered the community.

In addition, the authorities have taken 87 environmental samples on the 5th floor last week, including the sofas, tables and chairs, corridors, etc. of the two rooms. Among them, 5 of the 39 samples in Room 5112 were positive; and in Room 5111 Out of 39 samples from the house, 20 were positive; the corridor samples were negative.

▼November 21, Discovery Bay Xuhui Court closed area inspection▼


+4

New Crown Vaccine | Post-injection visits are extended to the child and adolescent psychiatric department to see the new crown vaccine at most twice a week | 12 to 17-year-old youths will be given priority for vaccination. Kexing will provide school shuttle Kexing vaccine | Research young children's intradermal injection Antibody or higher Liu Yulong: The youngest 4-year-old girl, two quarantine visitors at Regal Airport Hotel, was diagnosed within one week. The Department of Health is investigating news: belong to the same level

Source: hk1

All news articles on 2021-11-22

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