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