Kn95 mask, as an international standard mask of the same model, can be used by medical staff in infectious diseases department. Its effect is similar to that of N95 type, but this type is the standard of the United States. They all mean that 95 percent of non oily particles can be blocked. N indicates no oil resistance. For some oily particles, the shielding effect is not enough. Bacteria, viruses, dust and other non oily particles have good effect and can be used.

　　Such masks should not be reused during the spread of the epidemic. If possible, replace it every 4 hours. In the process of virus prevention, try not to go to crowded places and contact people who come back from the ward, so as not to infect the body with the virus. After virus infection, patients will have symptoms such as weakness, dizziness, stuffy nose and fever.

　　Try not to reuse kn95 mask during the peak period of virus transmission. When going out, wear masks in time and do a good job in protection. Wash hands frequently with clean water to reduce the breeding of bacteria. At ordinary times, you can also drink more honeysuckle water, which can play a role. Some nutritious food can enhance your resistance.