Ключевые слова: alert, attention, beware, biohazard, bone, care, caution, concept, contagious, contamination, control, cough, dangerous, deadly, diagnosis, diagnostic, disease, epidemic, first aid, flu, global, graphic, hazard, health, health care, hospital, hygiene, ideas, infection, mask, medical, medicine, microbiology, panic, protection, respiratory, risk, safety, security, skeleton, stop, symbol, symptom, vaccine, victim, viral, virus, warning,