Public housing hidden risks of infection. Li Mengjie, professor of the Department of Indoor Design at Taichung University of Science and Technology, investigated 61 public housing units in China and found that poor ventilation will cause a significa...
Public housing hidden risks of infection. Li Mengjie, professor of the Department of Indoor Design at Taichung University of Science and Technology, investigated 61 public housing units in China and found that poor ventilation will cause a significant increase in the number of colonies in the public housing. It is a bacterial culture dish and has become a temperature bed for cross-infection. The risk of cross-infection of the new crown epidemic is even 5 to 10 times higher. This research result has been published in Scientific Report, a subsidiary of the international journal Nature.
Li Mengjie random sampling survey included bookshops, hospitals, offices, department stores, shopping centers, metro stations and high-speed railway stations, with high-frequency use rates of 22% and 78%, indicating that most ventilators have poor ventilation and non-ventilation.
The results also found that in the unwinding public housing, the carbon dioxide concentration is higher, and the number of colonies in the environment is about 1.5 to 5 times that outside the public housing, indicating that there is a higher risk of cross-infection in the unwinding public housing.
If the person brings the original to the toilet, the generated foam, excrement spray or wasteless trash cans can easily cause the virus to stay in the toilet, affecting the number of users who enter, especially the number of colonies in the hospital is significantly higher than that in other places. If the wind is not circulated, it will become a cross-infected temperature bed.
Li Mengjie said that nearby areas such as seated horse buckets, squat horse buckets and urinals are most susceptible to highly contaminated by bacteria. In addition to the need to strengthen cleaning, there is a higher risk of no garbage cans, because the pollutants in the garbage cans are easily dissipated into the environment because they are not covered. Improving the ventilation and cleaning of the bathroom is an urgent task to reduce the risk of cross-infection.
The windows should be opened as much as possible to open the windows. If there is no window, use mechanical force to strengthen the airflow to improve the flow. The garbage can must also be added. It is best to change the induction type of the water dragon head. You must first put the horse barrel on the bucket before sucking water.
Liu Yanlong, director of Taipei City Environmental Protection Bureau, said that the Economy Bureau has completely eliminated the public water dragon heads managed by the Economy Bureau in March 2020. The water used during the holiday can also prevent cross-infection of various bacteria; various public water management units in Taipei City are also cooperating to change the sensor water dragon heads, with a current progress of more than 33%, and the remaining will be replaced by 2023.
