Ключевые слова: avoid, business, carrying, caution, collective, collective immunity, communication, concept, contact, contagious, counteraction, covid19, crowd, dangers, disease, epidemic, gathering, group, growth, health, illness, immunity, infected, infection, load, members, pandemic, people, person, preventive, process, protect, protection, quarantine, reduce, risk, safety, social, society, spread, spreading, surrounding, suspicion, take steps, team, threat, threats, viral, virus, workers,