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Written by: Chen Jingqi, Zhang Jiamin
2020-03-14 23:48
Last updated: 2020-03-14 23:50The outbreak of new coronavirus pneumonia (commonly known as Wuhan pneumonia) continues. Four new confirmed cases were reported in Hong Kong today (14th). One of the 59-year-old confirmed patients lived in Hengtai Building, Fuheng Village, Tai Po. He and a couple of confirmed group members of the "Egyptian Circus of Egypt" lived in the same apartment. Authorities said that the source of the infection was unknown, but they lived in the same building, fearing that it might be related to the throat and the situation in Hongmei House, Changkang Village. Therefore, at about 7 pm, the lecturer Yuan Guoyong of the Department of Microbiology, the University of Hong Kong, Huang Jiaqing, director of the Center for Health Protection, and Zhang Zhujun, director of the infectious disease department of the center, arrived at the Hengtai Building to learn about the situation.
Huang Jiaqing, Yuan Guoyong and Xie Zhanhuan, deputy director of the Environment Bureau later held a press conference at 9:30 pm, mentioning three confirmed cases of Hengtai Building, living in two high-rise units near the rooftop, 3413 and 3213 respectively. Therefore, it is not ruled out that the residents of Room 3213 who had an earlier onset, their feces virus passed through the exhaust pipe of the excrement canal, and then discharged to the rooftop after being atomized, and then returned to the 34th floor unit due to the "turbulent effect" when the wind speed was not high. The patient is sick.
The Director of the Centre for Health Protection Huang Jiaqing (second from right), Chair Professor Yuan Guoyong (first from right) of the Department of Microbiology, HKU, and Xie Zhanhuan (third from right), Deputy Director of the Environment Bureau, held a press conference at 9:30 this evening to explain the Hengtai Building incident. (Photo by Zhang Jiamin)
Huang Jiaqing said tonight that the two confirmed cases of the Egyptian delegation, namely cases 119 and 124, lived in unit 3213, while the 59-year-old man and case 140 confirmed today live in unit 3413 of the same building. Yuan Guoyong said that the cause of infection in the three cases involved has not been found at this stage, but after inspection by experts, he found that the unit's throat design and construction did not violate the rules and comply with legal requirements.
However, he pointed out that it was a problem to cut off the exhaust pipe and cover it with adhesive tape in unit 3213. However, the drainage design of other drains and zinc plates was not a big problem. Therefore, he emphasized that this time it was not a replica of Amoy Gardens, nor was it The incident at Hong Mei House, Cheung Hong Estate, Tsing Yi last month. He went on to explain that this was because the onset of 3213 units was earlier, rather than the upper-level units in Kangmei Building, and the lower-level units were diagnosed.
Yuan Guoyong believes that it is currently possible to be a household of 3213 units, whose fecal virus is transmitted to the rooftop through the exhaust pipe, and then atomized and passes through the turbulent effect of the building, that is, the virus-infected air is transmitted to the rooftop due to the low wind speed. Return to the unit on the floor near the roof. This effect generally affects five floors. Therefore, for the sake of prudence, the Protection Center considers that it is necessary to isolate the residents of the nearby six floors first. Therefore, all residents living in rooms 13 and 14 on the 29th to 34th floors will be arranged to stay in the quarantine center.
As for the same single resident on the 1st to 28th floors, the Architectural Services Department will continue to inspect the pipes of the unit tonight. If the resident feels unwell, they will be sent to the hospital immediately. If there is no problem, they will not need to stay in the quarantine center. Deep throat saliva samples are tested to see if they are infected.
[New Crown Pneumonia in Fuheng Village] A newly confirmed patient was added to the Hengtai Building of Fuheng Village. The two patients who lived with the Egyptian delegation lived in the same seat and reported to the unit. The authorities sent an investigation. Yuan Guoyong, Huang Jiaqing, Zhang Zhujun and others were present. (Photo by Li Zetong)
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Xie Zhanhuan added that in general, if the water point is polluted, it will go down and there will be less upwards. However, the cause of the infection transmission in Hengtai Building cannot be found at present, so the spoiler effect cannot be ruled out. He went on to point out that most of the exhaust pipes would be 2 to 3 meters above the rooftop, but the pipes involved were short or could cause turbulence effects, so they started an investigation. The 13 and 14 households involved all use the same patio. Therefore, it is considered more appropriate to evacuate the households with higher risk of infection first.
For residents living in high-rise buildings or worrying about the effect of spoiling, virus-laden air returns to the house. Xie Zhanhuan said that the pipes need to be close to the rooftop to be able to return to the house. However, it is explained that the pipes in most buildings in Hong Kong are more than 2 meters away from the rooftop, so the disturbance effect is not large. The hose can be raised by 1 meter.
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