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(Fighting New Coronary Pneumonia) Experts in overcasting in Hong Kong ask to avoid gathering in closed environments without ventilation
China News Service, Hong Kong, November 22 (Reporter Zeng Ping) The new corona pneumonia epidemic in Hong Kong has recovered rapidly in recent days. In an interview with a China News Service reporter on November 22, an expert said that the dance group is a larger group. Avoid gathering in an indoor environment without ventilation.
According to a report by the Health Protection Center of the Hong Kong Special Administrative Region Government Department of Health, at 0:00 on the 22nd, the cumulative number of confirmed dance groups has risen to 80. The government of The Hong Kong Special Administrative Region issued a mandatory test announcement for the first time, requiring people who have visited 14 dance venues in Hong Kong within the prescribed time limit to be tested for the novel corona virus before the 24 of November.
Since the outbreak of the epidemic, many public places in Hong Kong have undergone long-term strict disinfection. Subway station cleaners use disinfectant wipes to clean elevators and railcar rails. Many elevator buttons in residential buildings and office buildings are fitted with plastic covers. The World Health Organization has previously admitted that indoor aerosol transmission can cause outbreaks in poorly ventilated indoor locations. Before the epidemic recovered significantly, Hong Kong gradually relaxed restrictions on indoor gatherings. Does this confirm that Hong Kong, where all people can wear masks, is making slow progress in addressing the risk of indoor aerosol transmission?
Hong Kong breathing specialist Liang Zichao believes that poor indoor airflow in Hong Kong buildings is a long-standing problem. Simulation experiments show that the new coronavirus cultured with limited sensitivity can exist in aerosols for more than 4 hours. There is reason to believe that the risk of airborne transmission of the new coronavirus is greater than that of the influenza virus. This time, the large-scale overcast dance group may have various factors, such as droplet transmission and environmental pollution. It has not yet been determined whether there is airborne transmission after a detailed investigation.
Jin Dongyan, a virologist and professor in the Department of Biochemistry at the University of Hong Kong School of Medicine, believes there is some truth to this statement. Cleaning and disinfecting the surface of all objects is auxiliary in nature, doing so may solve everyone’s concerns, and its actual effect is not critical. Because the new corona virus spreads mainly through person-to-person contact, it is likely that a super spreader appeared in the dance group to spread the virus, and unconfirmed people were infected by contact with a certain object. that contained viruses.
Jin Dongyan pointed out that there may be new live coronaviruses on the surface of objects, but how many of them can cause infection remains to be studied. He also mentioned that the transmission of aerosols can occur in confined spaces under certain conditions, and the lack of air circulation can cause the particles to almost become airborne. Therefore, maintaining ventilation is more important than doing a good job of disinfecting and cleaning.
As for how Hong Kong responds to the new wave of epidemics, Liang Zichao said that the next two weeks will be the best time for intervention to control the epidemic. The RAE government must adopt a multi-pronged approach from tightening social distancing measures and increasing the number of virus tests, striving to minimize the possibility of a super spread that infiltrates the community in a short time. When Hong Kong citizens enter the indoor environment, in addition to wearing masks and paying attention to hand hygiene, they should also pay attention to whether the air is circulating. If there is no circulation, try to avoid meetings.
Tang Jisheng, vice president of the Hong Kong Medical Council Licensed Physicians Association, believes that the fourth wave of the epidemic in Hong Kong is the result of the joint efforts of citizens. Epidemic prevention measures. He noted that there is no way to completely prevent infection from people with little awareness of epidemic prevention. The RAE government and the citizens are now in the same boat and need to work together to face the battle against the epidemic that has already begun. (End up)
