Ключевые слова: abstract, backgrounds, biological cell, biology, blue, closeup, cold and flu, color image, computer graphic, concepts, copy space, coronavirus, coughing, covid19, danger, digitally generated image, dna, epidemic, healthcare and medicine, horizontal, human body part, illness, illness prevention, illustration, infectious disease, lung, macrophotography, magnification, medicine, micro organism, microbiology, multi colored, no people, pandemic illness, particle, pathogen, pneumonia, quarantine, research, science, severe acute respiratory syndrome, spreading, symptom, three dimensional, unhealthy living, viral infection, virus,