Ключевые слова: 2020, antivirus, bacteria, bacterium, biohazard, caution, cell, concept, conceptual, contaminate, contamination, danger, decease, design, diagnosis, disease, emblem, fever, flu, global, hazard, health, icon, illustration, infected, infection, infectious, influenza, medical, medicine, ncov, novel, number, outbreak, quarantine, risk, sars, sign, signal, stop, symbol, virus, year,