Ключевые слова: alert, alps, attention, ban, banner, breathing, cancel, cancelled flights, caution, concept, contagious, contamination, corona, coronavirus, dangerous, disease, epidemic, fever, flag, flu, illness, illustration, infected, infection, infectious, influenza, italy, lung, medical, medicine, respiratory, risk, safety, science, sickness, sign, ski season, sport, stop, switzerland, tourism, tourism industry, trains, vaccine, virus, warning,