Ключевые слова: attack, background, biology, black, bloodstream, chemical, clean green, cold, concept, coronavirus, coronovirus, covid 2019, dangerous virus, disease, empty, epidemic, epidemiology, flu, genetic, global, health, health risk, illustration, infection control, influenza background, lethal, medicine, microbe, microbiology, microscopic, molecule, new strain, new virus, pandemic, particles, pathogen, pathogenic, quarantine, realistic, risk, science, sickness, structure, symbol, symptoms, texture, vessels, virus, warning, web design,