During epidemic prevention and control, how serious will it be if you go out without wearing a mask?

2022-08-06 0 By

At present, the epidemic prevention and control situation is grim and complex. The Omicron variant strain is highly contagious. One of the most effective means of preventing the novel Coronavirus is to wear a mask.Here are some things to keep in mind about wearing masks scientifically — why they can prevent infection: surgical masks, N95 masks, etc.The picture below shows the airflow difference between wearing a mask and not wearing a mask.Masks are made of non-woven cloth and melt-blown cloth. These special materials can not only prevent harmful substances from entering the respiratory tract, but also prevent the droplets emitted by oneself when sneezing, coughing and speaking from escaping into the air.Studies have shown that as long as both parties wear masks and are more than 1 meter apart, the chance of infection is almost zero.The difference in the transmission rate of novel coronavirus carriers in communication with uninfected persons wearing masks versus not wearing masks: As shown in the figure above, if people wear masks in a scientific and standardized way in their daily communication, the transmission rate of the virus is extremely low.Wearing a mask is not only good for oneself, but also good for others. It is not only to protect oneself, but also to be responsible to others.These methods will make masks “ineffective”. The wrong way to wear a mask, not only does not play a protective effect, but also may cause disease.There are five ways to make a mask “ineffective” : 1. Pull the mask to the chin: After wearing the mask for a long time, many people are used to pull the mask to the chin and expose the nose, especially when shopping malls and eating.2. Not fully fitted to the face: There is a gap between the mask and the face, where air flows when a person breathes.In: When wearing a mask, press your nose to fit your face.When wearing a mask, the mouth and nose must be covered completely. The metal strip is attached to the bridge of the nose, with the upper end under the eye socket and the lower end covering the lower jaw.3. Touch the outside of the mask when removing it: We block droplets through the mask, and if we remove it directly from the outside with our hands, it opens the channel for contact transmission.Hands may be contaminated by the outside of the mask, if you forget to wash your hands, touch your nose and rub your eyes, the virus will unknowingly enter the human body.Correct way to remove masks: take them off with a lanyard and wash hands after removing masks. It is best not to remove masks when there is no washing condition.4. Wearing masks backwards: Disposable surgical masks generally have three layers, with an outer layer to block water, a middle layer to block particles and an inner layer to absorb moisture.If the mask is worn backwards, the water-blocking outer layer faces inward.Exhaled water vapor can not pass through, wear a mask for a while wet, lost the blocking effect.5. “extended service” of masks: “extended service” will greatly reduce the protective effectiveness of masks.Under normal circumstances, disposable medical masks and surgical masks are used only for limited times, and the cumulative use does not exceed 8 hours.Masks should not be used for more than 4 hours by occupationally exposed persons and should not be reused.One thing to remember: the primary purpose of wearing a mask is to protect yourself and others, so don’t let it go for naught.What are the consequences of not wearing a mask in public and not listening to the dissuasion?Sources: China Education Daily, Dalian CDC, News Dalian