Ключевые слова: alert, antibiotics, avian influenza, background, bacterium, biohazard, contact, corona, coronavirinae, coronavirus, coronaviruses, covid, covid19, crowd, danger, electronic, equipment, fever, flu, gel, gloves, healthcare, human influenza, immunity, infect, infection, influenza background, information, isolated, mask, microbe, nurse, outbreak, pathology, pollution, prevention, protection, protective, quarantine, sanitizer, science, sickness, surgical, swine, symptoms, thermometer, tube, viral, virologymedical, virus,