Ключевые слова: 2020, airborne, background, bacteria, bacterium, biohazard, biology, cell, concept, contagion, coronavirus, dangerous, deadly, disease, epidemic, flu, global, health, healthcare, hiv, human, illness, illustration, incubation, infection, information, medical, medicine, microbiology, molecules, organic, organism, outbreak, pneumonia, prohibition, quarantine, research, sars, science, scientific, sick, sickness, stop, syndrome, technology, vein, viral, virus, virus strain, world,