Ключевые слова: alert, awareness, background, bacteria, cancer, cell, circle, cold, concept, contagious, contaminated, crisis, crowd, danger, disease, ebola, epidemic, fever, flu, germ, germs, health, healthcare, hiv, illness, illustration, infection, influenza, medical, medicine, microbes, microorganism, opioid, pandemic, patient, prevention, protects, red, risk, safety, sickness, spread, symptom, transfer, transmission, viral, virus, white, word,