On January 31, Hubei Red Cross Society issued a correction on the receiving and use of “36,000 N95 masks”, which mentioned that on January 26, 2020, a caring enterprise donated 36,000 KN95 masks to the Red Cross Society of Hubei Province.We have learned from the health department that this model cannot be used for the protection of first-line medical staff in designated hospitals for COVID-19 treatment, but it can be used for general protection.In line with the objective needs of humanitarian rescue and the current situation of materials, 18,000 KN95 masks were donated to Wuhan Ren ‘ai Hospital.
Many caring people and the public are not familiar with the different types of masks. On January 25, the Union Medical College Affiliated to Huazhong University of Science and Technology Tongji Medical College issued a report on the differences between medical protective masks, N95 masks and KN95 masks in a related question about the donation received by the Union Medical College Hospital.
It is mentioned in the article that the Union Hospital is in urgent need of: goggles, N95 masks, surgical masks, disposable medical masks, medical caps, protective clothing, operating gown, anti-impact eye masks, protective masks, and various disinfectant.
Part of the supplies shall meet or exceed the following standards :1. Medical protective masks: conforming to Chinese GB 19083-2010;2, N95 mask: NIOSH certification in the United States, non-oily particulate matter filtration efficiency ≥95%;3, European N95 mask: European FFP2 standard;4, KN95 mask: in line with Chinese GB 2626 mandatory standard, filtering efficiency of non-oily particles ≥95%。
Medical workers must use medical protective masks under the following circumstances: 1. close contact with infected patients;2. Conduct operations that may produce aerosols, such as sputum aspiration and intubation;3. Possible operations to produce body fluid splashing, etc.
In other cases, N95 or KN95 masks can be worn. The key to wearing a mask is that it fits closely with the face. Protective masks with respirators should not be used.As for surgical masks, they conform to YY0469-2011 medical surgical masks.
As for the specific use of masks, on January 31, the Bureau of Disease Control and Prevention of the National Health Commission issued a notice on the issuance of the guidelines for the prevention of novel coronavirus infection among different risk groups and the guidelines for the use of novel coronavirus pneumonia masks.KN95/N95 and above particulate matter protection mask: the protective effect is better than medical surgical mask, disposable medical mask, recommended for on-site investigation, sampling and testing personnel, the public can also wear in highly crowded places or closed public places.
Specific scenarios for wearing masks against particulates KN95/N95 and above include in crowded places of public transport and when using vehicles;Do not touch or adjust the mask when entering the living space of quarantine personnel at home.When conducting investigations of suspected and confirmed cases;For environmental cleaning and disinfection personnel, cadaver disposal personnel.
In addition, for the public transport passengers, taxi drivers, public services, the armed police, traffic police, security guards, media reporters, express delivery industry such as personnel, because of daily contact personnel is more, there is risk of infection, its place unit should be configured disposable surgical masks or medical surgical masks or KN95 / N95 or higher particulate respirators.
Post time: May-30-2021