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Author: Lao Minyi
2020-06-15 09:08
Last update date: 2020-06-15 09:08A total of 9 people were diagnosed in the Luquanlou group in Liyuan Village, Shatian, 6 of whom lived on the 8th floor. Yuan Guoyong, a professor at the Department of Microbiology of the University of Hong Kong, said recently that there may be airborne transmission. The CHP will conduct a second round of virus testing for residents.
Liang Zichao, chairman of the Infectious Diseases Advisory Committee of the Medical Association, said today (15th) that there is currently no objective evidence to prove that the infected group was infected by airborne transmission. The environmental samples collected at the site did not find virus residues. It is estimated that the infection was transmitted through contact with public facilities. The chance is greater.
▼Shatin Liyuan Village group broke out▼
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For those who were diagnosed with Luquanlou, the virus tests were negative for 5 times, and finally went into bronchial sputum to get a positive result. Liang Zichao explained on the Hong Kong and Taiwan program "Millennium" this morning that the number of viruses in the upper respiratory tract of ordinary patients is relatively small. Viruses were found only after taking samples of the lower respiratory tract. He also pointed out that some patients have a small amount of virus, even if the test sensitivity is high, it is easy to have false negatives in the test.
Liang Zichao believes that there is currently no objective evidence to prove that there is a risk of leakage in the canal pipes of Liyuan Village, no residual virus has been found in environmental samples, and no special source of atomization can be found in the Luquan Building, which may spread the virus in the environment. Environmental factors prevent the virus from being diluted, posing an airborne risk. He believes that the greatest opportunity is through environmental contact. For example, public facilities have a greater chance of spreading viruses, but they still cannot rule out any possibility. For example, if the toilet does not have a door gap, it is necessary to avoid opening the exhaust fan when closing the door, so as to avoid a large negative pressure in the room. The virus is drawn out through the leak, and the residents are reminded that if they find a special smell or the channel is modified, they must Contact the Housing Department for early inspection.
Regarding the possibility of relaxing the restriction order, Liang Zichao believes that it is not a problem to have dinner with family members who are in frequent contact, but the risk of spreading meals with strangers at close quarters is greater. He also pointed out that there are currently more than 8 people gathering in outdoor places. The effect of the restriction is limited. If it is gathered indoors, such as religious activities, and the risk of spreading when there is no air circulation is high, the situation is like an outbreak in the Beijing market, or it is related to a low-temperature working environment and no air circulation. If a person is sick, it is easy to spread to the same Other people in the workplace.
Beijing recently reproduced the local infection of the new coronavirus. For the arrangement of health codes, Liang Zichao believes that it has little effect on the implementation of the measure, explaining that it is difficult to stop because there is a special group outbreak in a certain place in the country, otherwise no measures will be implemented.
Liang Zichao said that at present there is no objective evidence to prove that the Luquanlou infection group was spread by air. (Information picture/Photo by Tan Weiquan)
New Coronary Pneumonia·Latest｜Residents in Luquan Building, Liyuan Village must be tested again and the order will expire on Thursday
New Crown Pneumonia｜Environmental samples from the Luquan Building in Liyuan Village have not been detected and residents need to be tested again
New Coronary Pneumonia·Latest｜Households with negative environmental samples from Luquan Building in Liyuan Village need to be tested again
New Crown Pneumonia｜Yuan Guoyong: Luquan Building may have air cracks
New Coronary Pneumonia｜The 33-year-old male neighbor of the first patient in Luquan Building of Liyuan Village was diagnosed with nine people in the building
Cen Zijie : Some residents were misplaced stool sample bottles
Sha Tin District Councillor Cen Zijie also said that the government provided fecal sample testing for babies this time, but some residents were mistakenly distributed a fecal sample bottle instead of a deep-throat saliva sample bottle, and also notified residents to undergo virus testing in the form of a notice, questioning if the residents had already moved How can I learn about the arrangement? He criticized the government for insufficient cleaning and disinfection work, which failed to reassure residents in the district. Some residents expressed concern that the resumption of classes would increase the risk of transmission.
Coronavirus disease
