Ключевые слова: abstract, art, biology, cell, contagion, contagious, danger, disease, epidemic, flu, health, illness, infect, infection, laboratory, macro, medical, medicine, microbiology, microorganism, microscopic, organic, organism, outbreak, pandemic, pathogen, research, sars, science, scientific, sick, sickness, symptoms, terrible, treatment, vaccine, viral, virology, virus, virus cell,