Ключевые слова: abstract, anatomy, biology, blue, cells, cellular, closeup, colorful, concept, contagion, contagious, danger, defense, disease, epidemic, global health, health, healthcare, hygiene, illness, illustration, immune system, immunology, infection, infection control, macro, medical, medicine, microbiological, microbiology, microscopic, microscopic view, molecular, organism, outbreak, pandemic, particles, pathogen, pathogenic, prevention, protective measures, public health, red, research, risk, science, spread, viral, virology, virus,