GO24 Fitness has installed air purifiers but the ventilation rate is insufficient. Yuan Guoyong: Low risk of outbreak

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Written by: Zhong Yan

2021-03-27 13:34

Last update date: 2021-03-27 13:55

The fourth wave of the epidemic in Hong Kong has gradually slowed down. Yesterday there was a case of unknown origin in which the patient was a 38-year-old female flight attendant.

Lin Wenjian, Director of the Centre for Health Protection, today (27th), together with Yuan Guoyong, Chair Professor of the Department of Microbiology of the University of Hong Kong, representatives of the Electrical and Mechanical Services Department and the Environmental Protection Department, visited GO24 Fitness, a fitness center where the patient had visited three times a week.

Yuan Guoyong pointed out that there was fresh wind in the fitness room involved, and air purifiers were also placed near the yoga studio and treadmill.

Yuan believes that URSUS Fitness, which caused an outbreak earlier, has a lower risk of causing an outbreak this time, but the initial assessment of the fresh air volume of GO24 Fitness is still less than 6 air changes per hour.

Yuan Guoyong (middle), the Director of the Centre for Health Protection Lin Wenjian (right) and the Assistant Director of the Electrical and Mechanical Services Department Huang Weiguang (left), visited GO24 Fitness, which was visited by patients.

(Photo by Liao Yanxiong)

Wong Wai Kwong, Assistant Director of Electrical and Mechanical Services Department, pointed out that after inspecting the air conditioning and ventilation systems in the fitness room, he saw that there was fresh air supply in the room, but after the test, calculations are still needed to know the actual fresh air volume; and the fitness room has two built-in high-efficiency particle blocks. The filter can filter more than 90% of the particles, but the placement and quantity can be adjusted.

Yuan Guoyong pointed out that there are several fresh air inlets in the fitness center, and there are two air purifiers at the same time, but the fresh air volume is insufficient, and the distribution of the fresh air is also one of the problems. One of the fresh air inlets is near the toilet. There is often a place where the air exits to remove the smell, "As soon as the fresh wind enters, it may be removed from the toilet."

Yuan Guoyong and representatives of the Electrical and Mechanical Services Department also looked at the air intake of the fitness center. Although the calculation has not been completed yet, preliminary observations believe that the air intake is insufficient. "It must not be enough (6 times per hour)", or a fan must be added.

Yuan Guoyong also stated that he had taken environmental samples for testing in all air outlets, yoga studios, fitness equipment used by patients, and lockers in locker rooms.

Yuan said that the location of the fitness room was originally used as a restaurant. After being converted to a fitness room, the original ventilation equipment will continue to be used, and GO24 Fitness has promised to find a contractor to deal with the ventilation problem.

He believes that the situation of GO24 Fitness is better than that of the URSUS fitness center. He pointed out that there was no fresh wind at the time in URSUS. Fitness people would circulate internally. "Therefore, there is reason to believe that even if there is an outbreak, it will be good, it will not look like URSUS. Sharp".

Yuan Guoyong also went to the Hefu Building of the fitness center to see the air intake position of the center.

(Photo by Liao Yanxiong)

Only one case in the fitness room inspected Lin Wenjian: I hope to take a few steps

Currently, only one confirmed case of GO24 Fitness has been visited, and the government has sent personnel to inspect the premises where the patient has visited.

Lin Wenjian pointed out that although it has not been confirmed that the fitness room was the site of the patient's infection, he still hopes to "take a few steps ahead" to investigate in high-risk areas because there was a fitness group earlier.

Yuan Guoyong said that Hong Kong will finally have a chance to clear zero now. "If you can clear zero on the 14th to 28th, basically within Hong Kong, if you don’t let people enter, there will be no cases in Hong Kong at all." So now, " It’s very strategic.” Even if there is only one case, it must be investigated immediately.

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