Ключевые слова: allergy, art, black, button, care, circle, color, colorful, contour, danger, disease, disposable, doctor, dust, epidemic, equipment, face, flat, flu, green, health, healthcare, hospital, hygiene, icon, illness, illustration, infection, influenza, isolated, line, linear, lineart, mask, medical, medicine, object, outline, pollution, prevention, protection, protective, safety, sign, surgeon, surgery, surgical, symbol, virus,