advice
airport
avoid
care
caution
chair
community
concept
control
corona
coronavirus
covid19
disease
distance
distancing
do not
epidemic
flu
health
hospital
illness
indoor
infection
medical
outbreak
pandemic
people
person
prevention
protection
protective
public
quarantine
safety
seat
sign
sitting
social
social distancing
space
spread
station
subway
symbol
train
transportation
virus
waiting room
warning