Wearing a mask can effectively prevent the novel coronavirus, but choose a medical surgical mask or N95 mask, not ordinary cotton masks.
The new coronavirus belongs to the respiratory tract infectious diseases, masks can cover the mouth and nose, block harmful gases, droplets, viruses and other substances into the respiratory tract, so as to achieve the role of preventing the new coronavirus.
Masks mainly include gauze masks, surgical masks, N95 masks, etc. Among them, gauze masks can be washed and used repeatedly, but the protective effect is relatively poor, which may not be able to achieve the role of preventing the new coronavirus; surgical masks and N95 masks have a stronger ability to prevent viruses and bacteria, and are also very effective in preventing the new coronavirus.
The use of masks should completely cover the mouth and nose, and continuous use is not recommended for more than four hours; if the mask is broken or contaminated, it must be replaced in time to achieve a good protective effect.