How to prevent aerosol transmission of NCP ?
Q1: What is aerosol transmission?
A: Aerosol transmission refers to long-distance transmission of floating droplet nuclei composed of proteins and pathogens coming out from the droplets upon evaporation. The floating nuclei spread in the form of aerosols.
Q2: Can aerosols spread the novel coronavirus?
A: It is theoretically possible but it is yet to be confirmed. The main routes of the virus infection remain respiratory droplets and contact. Aerosol transmission can only take place under certain conditions, such as in a medical operation of tracheal intubation. Currently no evidence has shown the novel coronavirus can be transmitted through aerosol.
Q3: Can wearing a facemask prevent aerosol transmission?
A: Wearing masks helps prevent people from getting infected by airborne respiratory droplets in routine clinical care or daily work and life.
Q4: Can we open windows for ventilation?
A: Usually the novel coronavirus cannot be found in a well-ventilated place. It is recommended to open windows at least twice a day for ventilation.
Q5: How could the general public avoid aerosol infection?
A: 1. Avoid staying in places with poor ventilation.
2. Open windows to let in and out large amounts of air. It helps to dilute the virus concentration and reduce the risk of infection;
3. Wear a mask and do not touch anything in the elevator where the space is relatively small and with poor ventilation.
4. Wash your hands frequently, keep rooms clean, and maintain distance between one another.
如何預防氣溶膠傳播？
Q1：什么是氣溶膠傳播？
氣溶膠傳播是指飛沫在空氣懸浮過程中失去水分而剩下的蛋白質和病原體組成的核，形成飛沫核，可以通過氣溶膠的形式漂浮至遠處，造成遠距離的傳播。
Q2：氣溶膠能傳播新冠病毒嗎?
理論上有可能，現實中證需進一步證實。新冠肺炎目前還是主要通過飛沫傳播和接觸傳播的疾病：在某些特殊的條件下才可能發生氣溶膠傳播，例如進行臨床氣管插管等專業醫療操作時。目前尚沒有證據顯示新型冠狀病毒通過氣溶膠傳播。氣溶膠傳播途徑尚待進一步明確。
Q3：戴口罩可以防止氣溶膠傳播嗎？
如果是在常規臨床護理、一般的工作生活條件下，采取正確佩戴口罩的飛沫傳播防護措施，是足以滿足保護普通公眾，而不被感染的。
Q4：還能開窗通風嗎？
在日常通風環境下，空氣中一般不會有新冠病毒。建議每天至少兩次開窗通風。
Q5：公眾該如何預防氣溶膠感染?
1. 盡量避免前往密閉空間；
2. 自然通風的通風量很大，開開窗，病毒稀釋到一定程度，風險就很低了；
3. 電梯間通風很差，又是小空間，一定要戴口罩、小心觸摸；
4. 勤洗手、勤擦洗、與他人隔開距離。
