Ключевые слова: background, banner, biohazard, blackboard, care, clinical, concept, control, corona, coronavirus, covid 19, covid19, crisis, danger, dangerous, diagnostic, disease, epidemic, flu, global, health, illness, infect, infected, infection, influenza, information, letters, medical, medicine, microbiology, outbreak, pandemic, pneumonia, protection, quarantine, risk, safety, sars, sick, sickness, sign, syndrome, text, vaccine, viral, virus, warning,