alert
attention
bacteria
bio
biologic
black
careful
caution
contagion
corona
coronavirus
coronovirus
danger
dangerous
disease
environment
epidemic
hazard
hazardous
health
icon
illness
illustration
infected
infection
infectious
information
label
medical
medicine
mers
merscov
nc0v
pollution
protect
protection
red
research
safety
security
sickness
sign
stamp
stop
symbol
virus
warning
waste