Ключевые слова: air, care, clinic, danger, doctor, epidemic, equipment, face, ffp2, filter, flu, global pandemic, health, health care, healthy, hospital, hygiene, illness, infection, influenza, kn95, mask, material, medical, medicine, n95 mask, nurse, pandemic, prevention, protect, protection, protective, protective mask, quarantine, respirator, safety, sick, stay at home, surgical, surgical mask, uniform, virus,