A 26-year-old female teacher (Case 13072) of Quarry Bay School of Learning Kindergarten (Case 13072) was separated by about 9 seconds from the two sons of a Pakistani woman who was infected with the virus (Case 13045). Mei Foo Station Exit A, suspected to be infected due to this encounter.
Xu Shuchang, a government expert consultant and chair professor of the Voice System Department of CUHK, said on the commercial TV program "Let's Start on a Sunny Day" that the two groups of patients have 100% identical viral gene sequences. It is estimated that short-range airborne transmission occurs. It is recommended that citizens wear two masks and flat glasses when going to crowded places.
▼On January 20, the Centre for Health Protection pointed out that Exit A of Meifu Station of MTR was suspected to be a place where female teachers had been infected▼
Xu Shuchang analyzed that the only chance of contact between the kindergarten teacher and the two infected sons of the Pakistani woman has been found. In addition, the virus gene sequence is 100% identical, and it is estimated that there is a high chance of direct transmission from one generation to another.
He said that even if a surgical mask is worn, it can only prevent large droplets. Droplets smaller than 5 microns can pass through the mask, or pass through the gaps on both sides of the mask, or adhere to the surface of the mask, and then touch the eye surface with hands and become infected. Coupled with the strong wind in the subway station tunnel, "the moisture of the large droplets can be blown away, so that the small droplets can be spread through the air in a short distance."
Xu explained that Omicron has strong transmission power, 4 to 8 times stronger than Delta, and 70 times stronger than the upper respiratory tract virus. Citizens are urged to wear surgical masks in crowded places. If there is a gap next to the mask, it is better to stay outside. Wear a cloth mask and glasses or flat glasses to avoid droplet transmission.
Recently, there have been many cases of unknown origin involving Omicron and Delta. Xu believes that the government should take the lead in arranging non-emergency service civil servants to work from home, and it is expected that private enterprises will follow to reduce the flow of people in the community, especially public transport.
▼On January 20, many residents of Yat Kwai House in Kwai Chung Village were diagnosed and sealed up▼
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It is ideal to prohibit residents of Yat Kwai House from entering and leaving for 3 days
As for the outbreak of the outbreak at Yat Kwai House in Kwai Chung Village, the authorities required 2,500 residents to test every night, and they could only go out if they tested negative the next morning.
Xu estimates that the common areas of the building, such as the lobby and garbage room, are widely polluted, but he believes that residents should not be allowed to go out to work or roam the community. Because the test is negative today, it can also be positive the next day. Ideally, it should be prohibited from entering and leaving for three days. The government sent supplies on its behalf, but it is estimated that the authorities have administrative and human resources to consider.
Rat Killing Order｜Xu Shuchang received threatening emails threatening: "I hope you will pass away soon" Rat Killing Order｜Xu Shuchang: Hamsters have a high chance of transmitting the virus to humans, high public health perspective needs to be killed Xu Shuchang stressed that the epidemic is never under control Post-community wandering ban evening hall｜Xu Shuchang: Will the frequent whereabouts of the Victoria Park group cause community outbreaks, we need to observe Wangyuelou again｜About 30 diners have not been found Xu Shuchang appeals to take the initiative to show up to help reorganize the communication method
