Flu: surgical mask protects as well as expensive kN95 respirator
Pittsburgh - Disposable breathing masks that filter at least 95% of all aerosols from the air ( kn95 mask with valve for sale ) did not show health care workers more frequently from respiratory illnesses including one in the cold season in a randomized pragmatic study in the US medical journal (JAMA 2019; 322: 824-833) Proven flu protected as simple surgical face masks. Surgical face masks filter the breathing air from doctors and nursing staff and thereby prevent infection of the patient. They are not actually intended for protection in the other direction, since the masks do not close completely on the facial skin. In addition, the masks are often worn "casually". Aerosols containing viruses or other pathogens can enter the respiratory tract by the side of the mask. The US Centers for Disease Control and Prevention (CDC) therefore urgently advised staff during the 2009 H1N1 epidemic ("swine flu") to protect themselves from infection with KN95 respirators. Afterwar