Ключевые слова: airborne, antibacterial, asian flu, bacterial infection, bacterium, biohazard, blue, change, comparison, concept, copy space, coronavirus, covid, covid19, covid2019, danger, disease, disinfect, epidemic, flu strain, fly, flying, germs, hygiene, infection, infectious, medical, microbiology, movement, mutation, outbreak, pandemic, pattern, pink, pneumonia, poisonous, prevention, protection, save, science, spread, vaccine, virology, virus, virus spread,