On the afternoon of the 8th, Shanghai new crown pneumonia epidemic prevention and control press conference, experts emphasized that the new crown pneumonia transmission channels in addition to direct transmission, contact transmission, and aerosol transmission. This makes a lot of people worry, floating to the aerosol, is not inattentive to be inhaled into the body, is not it impossible to prevent? According to the Yangtze River Daily, Wuhan infectious disease experts said, aerosols are not so easy to come out, not so easy to float. In accordance with the diligent washing of hands, wear a mask, less go out, do not party, more ventilation and other requirements to prevent, can prevent aerosols. It turns out that aerosols are Aerosol transmission is when droplets are mixed in the air, forming aerosols that cause infection when inhaled. There are concerns that aerosols follow the air like a shadow, and who knows when a swarm of aerosols with viruses will fly in. Many respiratory diseases can be spread by aerosols, and aerosols are not considered a new mode of transmission. People have heard less about it and may become skeptical and fearful. Guo Wei, deputy director of the Department of Infection at Tongji Hospital, said that aerosols are particles suspended in gas that form small droplets in the air. It doesn’t float all the time; it settles easily and attaches to the surface of objects. This is the same as the contact transmission prevention requirements. Even in the floating state, for one thing, we have mask protection, so the proper wearing of masks is advocated, with masks covering the mouth and nose and minimizing the gap between the face and the edge of the mask. Secondly, the virus must also reach a certain amount of disease, in the open, less crowded environment, the aerosol is diluted, blown away, trace amounts of virus-containing aerosols are unlikely to let a person “hit” in the closed space, such as the elevator, the office, the risk of aerosol infections will be a little higher, so we remind everyone not to gather, queuing up between 1.5 meters to 2 meters is a relatively safe isolation distance. Not as easy as you think A patient with a new coronavirus in the neighborhood, he exhaled air is not full of aerosols with the virus. Guo Wei said, under normal breathing conditions, located in the lungs of the lower respiratory tract of the virus is not so easy to come out, but violent coughing, coughing up sputum, more likely to produce aerosols, which is consistent with the droplet transmission, in fact, the transmission of aerosols are also included in the droplet transmission and contact with the spread of the disease. The spread of aerosols is of greater significance to healthcare workers as a precautionary measure. Remind them to take airborne isolation measures, such as wearing protective masks and goggles, when performing operations such as tracheal intubation. Upstairs aerosols will not drift into the home There is also concern that neighbors have infected people, upstairs aerosols will not drift into their own homes, in the end, can still open the window for air. Yangtze River Shipping General Hospital Infection Department Expert Group Leader Xu Green leaf said, open the window is necessary to ensure air circulation, indoor ventilation, aerosols blowing away, air circulation, not to mention the new crown pneumonia, other respiratory diseases are also easy to come to the door. She suggests that it can be opened several times a day, and the total duration can be kept at 2-3 hours. She believes that if it is not a bad habit, such as spitting, the likelihood of this infection is very small. In short, opening windows and renewing indoor air will settle even if there are aerosols, and mopping floors and wiping tables with disinfectant, as required to guard against contact transmission, can guard against it. Wuhan University Zhongnan Hospital internal medicine Li Xiaoning, chief physician, further explained that upstairs and downstairs with isolated patients, the need to be flexible. For example, point building windows directly opposite the neighbors, to stagger the ventilation, or not open that window; if the building spacing is not large or old district, the population living density is very large, and in the known surrounding infected patients, it is not recommended to frequently open the window ventilation. Because in case the neighbor’s home air change time and their own home exactly the same, and it happens that the wind direction is still blowing towards their own homes, then there is a possibility that other people’s home air and their own home circulation. Wuhan Sixth Hospital, deputy director of the Department of respiratory medicine Li Fajiu, deputy director of the doctor also believes that you can open the window to ventilate, if and sick neighbors are far away, it should not be a problem. Most of the spread of aerosols are in closed rooms, such as laboratories, hospital clinics, released into the atmosphere, the spread of aerosols will be relatively low. Huazhong University of Science and Technology Tongji Medical College School of Public Health, Professor He Mei Ann that the public to strengthen the prevention is not wrong, but appropriate window is necessary to choose a good time to open the window. Will there be in the elevator The elevator is considered to be a high-risk zone, will there be a person in front of a person left an aerosol with a virus, which happens to be inhaled by a person behind. Xu Greenleaf believes that theoretically there is such a possibility, so the previously recommended precautionary initiatives are effective, reduce going out, do not party, and wear a tight mask when necessary to go out. It is recommended that the body does not touch the elevator space, press the elevator button, you can use paper towels to isolate a layer and then press, and wash your hands immediately after returning home. What to do if you step on an aerosol Aerosols will settle, what to do if you step on an aerosol. Experts believe that there is no need to worry too much, the habits of the vast majority of people, outdoor and indoor wear shoes are separate, go out and wear shoes can be placed in the door, not to the indoor to. If you are really worried, you can refer to the method of disinfecting shoes, spraying disinfectant water on the soles. Aerosols can be produced by flushing the toilet. The New Crown Virus has been detected in the feces of patients with New Crown Pneumonia. Experts warn that viruses can be found in feces, and the flow of water from flushing the toilet can also produce aerosols. It is recommended that the toilet lid be closed to prevent the spread of aerosols. After flushing the toilet, you can also wipe the lid with a disinfectant solution. Regarding whether sewers and toilets cause the spread of viruses from upstairs to downstairs, experts believe the risk is low. Director Li Xiaoning suggested that sewer disinfection can be done every night when no one is using it by putting 84 disinfectant tablets or 84 disinfectant into the sewer or toilet, noting that if it is metal it is corrosive, and if it is PVC piping there is no problem. Director Li Xiaoning emphasized that more ventilation fans can also be used in the family to promote the elimination of indoor air. Bathroom and kitchen in the use of 84 disinfection, be sure to open the ventilation equipment, that is, to open the ventilation fan ventilation, to prevent poisoning. Content source: Yangtze River Daily