What is the difference between ordinary medical masks, medical surgical masks and N95 masks?

A sudden outbreak of pneumonia caused by a new type of coronavirus has made the Spring Festival in 2020 different from the past. The number of new coronavirus pneumonia infection cases in various places continues to increase. To be honest, I have been paying attention to the progress of the epidemic in the past few days, and every heavy number is very worrying.

In the face of this epidemic, what we ordinary people can do is stay home honestly and don't go out to add to the traffic jam. If you really want to go out, please wear a mask and take protective measures. Speaking of masks, I found that many people started buying N95 masks. Drugstores everywhere are in short supply. They will buy ordinary medical masks if they can’t buy N95 masks. Another type of mask is medical surgical mask. Which one should I buy? Today I will come to talk to you about the difference between these masks?

Ordinary medical mask once:

One-time ordinary medical masks are suitable for sanitary protection in ordinary medical environments where there is no risk of body fluids and splashes, suitable for general diagnosis and treatment activities, and for general low-flux and low-concentration pathogenic bacteria polluted environments.　　 One-time medical masks can meet many of your requirements, but for ordinary people, you can achieve certain precautions by wearing medical masks correctly once when you go out.

Features: Compared with medical surgical masks and medical protective masks, the filtration efficiency for particles and bacteria is relatively low, but the filtration efficiency is higher than that of ordinary cotton spun masks in society.

One-time medical surgical mask:

One-time surgical masks are more suitable for preventing blood, body fluids and splashes during invasive operations. They are mainly used for the basic protection of medical staff and related personnel in medical institutions. They are required for general doctors' operations and infection wards. Wear this mask.

Main features: It is used to prevent blood, body fluids and splashes in invasive operations, and to protect respiratory diseases transmitted by droplets. It can prevent infectious agents (bacteria, viruses and other pathogenic microorganisms) with a diameter of less than 5 microns Wait).

N95 mask:

Certified by NIOSH in the United States, the filtration efficiency of non-oily particulate matter is ≥95%.

KN95 mask: It meets our China GB 2626 mandatory standard, and the filtration efficiency of non-oily particles is ≥95%.

But what we need to know is that "the core standards of industrial masks and consumer product masks are actually the same. According to the GB2626 standard KN95, KN90 is actually sufficient. The medical staff will have body fluid splashing and the environmental concentration is very high. It needs to be very strict.

Seeing here, everyone knows what kind of masks to buy, and Academician Zhong Nanshan, the leader of the high-level group of the National Health Commission, said in an online interview with "CCTV News" a few days ago: "In fact, it is not necessary to wear N95 masks. Wearing ordinary masks is still useful. Because these viruses do not exist alone, they often exist in droplets, and ordinary masks can block most of the droplets."

Feng Luzhao, deputy head of the technical team for the prevention and control of pneumonia caused by the new coronavirus infection of the Chinese Center for Disease Control and Prevention, also called for the saving of more medical protective masks and N95 masks for medical staff, because ordinary people wear medical masks once in general public places. can. However, Feng Luzhao specially reminded the public to wear medical surgical masks if they go to medical institutions. Drivers and passengers in public transportation, service personnel in public places, etc., should also wear medical surgical masks while on duty.