Ключевые слова: allergy, blue, breathing, care, clinic, coronavirus, cough, cover, covid19, danger, disease, doctor, epidemic, face, filter, flu, guard, hazard, health, health care, hospital, hygiene, illness, illustration, infection, influenza, mask, medic, medical, medicine, pollution, prevention, protect, protection, respirator, safety, shield, surgeon, surgical, template, virus,