How often do disposable medical masks need to be changed

The 2020 novel coronavirus pneumonia epidemic is spreading, and the prevention and control of the new coronavirus pneumonia epidemic is facing huge challenges. We must stay at home and not go out. Even if we need to go out, we must wear masks. Wearing a mask is the most important measure to prevent the new coronavirus. How often do we need to change our face shields?

In order to prevent infection, some people may wear medical masks all day, but this will make the nasal mucosa fragile, lose the original physiological function of the nasal cavity, and reduce the resistance. Therefore, in places with low population density and good ventilation, there is no need to wear masks. It should be reminded that the protective effect of any type of mask is time-sensitive and must be replaced regularly. It is recommended to change the mask every 2-4 hours. If the mask is contaminated, replace it as soon as possible.

When not in use, medical masks should be folded and stored in a ziplock bag. It is not recommended to take off the mask and put it directly into a pocket or bag, which will easily cause secondary pollution to the medical mask. Be sure to fold it into a clean ziplock bag and fold the side that touches the nose and mouth inward. In addition, experts reminded that the current high incidence of respiratory infectious diseases in winter and spring, home and public places also need to maintain indoor air circulation.

Middle-aged and elderly people should pay special attention. Wen Shenglan, chief physician of the Department of Respiratory Medicine of Run Run Run Hospital Affiliated to Zhejiang University School of Medicine, suggested that the elderly at home should try not to go out. If they really want to go out, they have to wear masks. If you have a fever, you should go to the hospital's fever clinic as soon as possible. If they have a fever, they should not touch them. In addition, pay attention to preventing colds, keep warm and personal hygiene, strengthen physical exercise, maintain a light diet, avoid activities in crowded places, wear a mask or cover your mouth and nose with tissue and clothes when coughing or sneezing.

Wash your hands frequently with soap and water or an antibacterial alcohol-based hand sanitizer, especially after coughing or sneezing, after caring for a sick person, before and after food preparation, before eating, after using the toilet, after touching or handling animals feces and returned from the home. The novel coronavirus pneumonia continues to worsen, and each of us has a responsibility. I hope everyone can wear masks when going out.