Masks are an important line of defense against respiratory infections and can reduce the risk of novel coronavirus infection. The mask can not only prevent the patient from spraying droplets, reduce the amount and speed of droplets, but also block the virus containing droplets nucleus, preventing the wearer from inhaling. Based on the current understanding of the disease, this guide is developed on how to use masks correctly.
The basic principle is scientific and reasonable wear, standard use, effective protection. The details are as follows:
(1) Masks are not required to be worn in open and ventilated places in non-epidemic areas. Masks are required to be worn in crowded or closed public places.
(2) Disposable surgical masks are recommended to be worn in open and ventilated areas with high epidemic incidence; Wear a surgical mask or particle protective mask when entering crowded or closed public places.
(3) When you come to the hospital with suspected symptoms, you should wear a respirator for particulate matter or a medical respirator without breathing valve.
(4) Patients with respiratory diseases should use protective masks under the guidance of doctors. Very young infants cannot wear masks, easy to cause suffocation.
(5) Cotton mask, sponge mask and activated carbon mask do not protect against virus infection.
Recommended types of masks and objects to use
(1) Disposable surgical mask: the public is recommended to use it in non-crowded public places.
(2) Surgical mask for medical use: the protective effect is better than that of disposable surgical mask, and it is recommended to be worn by suspected cases, public transport drivers, taxi drivers, sanitation workers and public service personnel while on duty.
(3) KN95/N95 and above particle protective mask: the protective effect is better than the medical surgical mask, disposable surgical mask, field investigation, sampling and testing personnel are recommended to use, the public can also wear in high-density places or closed public places.
(4) Medical protective mask: it is recommended to be worn by medical staff in outpatient and isolation wards of fever and confirmed patients when they are transferred.
Principle of mask treatment after use
(1) There is no risk of transmission by a novel coronavirus in the masks worn by healthy people. Generally, the masks should be replaced when the masks are deformed, wet or dirty, resulting in reduced protective performance. After the use of healthy people mask, according to the requirements of household waste classification can be disposed.
(2) Masks worn by suspected cases or confirmed patients should not be discarded at will. They should be treated as medical waste and treated in strict accordance with relevant procedures of medical waste. They should not enter the circulation market.
Standards and precautions for children to wear masks
It is recommended that children choose products that meet the national standard gb2626-2006 KN95 and are labeled with protective masks for children or adolescents. Children should pay attention to the following when using masks:
(1) Children should read and correctly understand the instructions carefully with the help of parents before wearing them, so as to master the correct method of using respiratory protective equipment;
(2) Parents should pay close attention to the wearing situation of children’s masks at any time. If children feel uncomfortable while wearing masks, they should timely adjust or stop using them; (3) Due to the small face shape of children, it is not recommended for children to wear an adult mask with requirements of tightness because it cannot be fully closed with the edge of an adult mask.