What kind of mask should I choose during the epidemic?

During the epidemic, masks should meet the following standards:

It conforms to China GB 19083-20 10 standard, and the filtration efficiency is 95% (non-oily particle test). It is required to pass the synthetic blood penetration test (to prevent body fluids from splashing) to meet the microbial indicators.

N95 mask has been certified by NIOSH of the United States, and the filtration efficiency of non-oily particles reaches 95%. KN95 respirator meets the mandatory standard 626, and the filtering efficiency of parallel particles is ≥ 95%. Generally made of non-woven materials, including filter layer, mask belt and nose clip. The standard medical surgical mask is divided into three layers, and the outer layer has the function of blocking water, which can prevent water droplets from entering the mask.

The importance and occasions of wearing masks during the epidemic are:

1, masks are an important line of defense to prevent respiratory infectious diseases, which can reduce the risk of novel coronavirus infection. The mask can not only prevent patients from spraying droplets, reduce the number and spraying speed of droplets, but also block droplet nuclei containing viruses and prevent the wearer from inhaling.

2. For individuals, the protective effect of vaccination is not 100%, and it takes some time to produce protective antibodies; For people, COVID-19 is easy to spread without forming an immune barrier. Therefore, at this stage, we should still adhere to some prevention and control measures, including wearing masks, keeping social distance, washing hands frequently, ventilation and other protective measures.

3. Wear masks in closed vehicles, airplanes, high-speed trains, subways, buses and other places with poor air circulation. And closed public places with poor ventilation conditions such as taking elevators.

4. When going to the hospital or accompanying relatives and friends to see a doctor, you must wear a mask in the hospital environment.

5. Wear masks at public service windows, such as cash registers in supermarkets and counters in banks.