Ключевые слова: abstract, aim, art, bacteria, biological, biology, concept, conception, connect, connection, contour, design, disease, drawing, element, epidemic, epidemiology, gas, general, global, graphic, icon, idea, illness, illustration, industrial, industry, infection, isolated, line, linear, link, mask, meaning, notion, outline, pandemic, problem, purpose, sign, symbol, thin, threat, virology, virus, warning, weapon, web,