Can KN95 masks prevent viruses?
May 17, 2022
Source: Cainiu Health
Dr. Jiang Weimin
Introduction
KN95 masks are highly effective in preventing infection with the novel coronavirus. KN95 masks are particulate-filtering respirators that, under normal conditions, provide filtration efficiency of up to 95% against non-oily particles. Additionally, KN95 masks can prevent inhalation of respiratory droplets containing the novel coronavirus; therefore, they help protect against infection with this virus.
KN95 masks are commonly used in daily life and are widely recognized by the public. To prevent viral infection, many people wear masks; contracting such a virus can adversely affect one’s health. So, can KN95 masks protect against viruses?
Can KN95 Masks Protect Against Viruses?
KN95 masks are highly effective in preventing infection with the novel coronavirus (SARS-CoV-2). KN95 masks are particulate-filtering respirators designed to filter out non-oily particles, achieving a filtration efficiency of up to 95% under standard testing conditions. They can also block inhalation of respiratory droplets containing the novel coronavirus; thus, KN95 masks help prevent infection with this virus.
Healthcare workers frequently use KN95 or N95 masks. For non-healthcare personnel, alternatives such as KN90 or N90 masks—or even disposable surgical masks—can also provide effective protection against the novel coronavirus.
In high-traffic public settings—such as buses and subways—wearing a KN95 mask is recommended. After donning the mask, gently press the metal strip along the upper inner edge to ensure a snug fit over the nose bridge and face. Adjust ventilation as needed, and replace the mask more frequently under demanding environmental conditions (e.g., high humidity, prolonged use, or heavy breathing). We hope this information is helpful!
