alert
attention
bacterium
biohazard
china
concept
contagiousness
contamination
corona
coronavirus
danger
dangerous
design
disease
element
epidemic
flu
global
graph
healthcare
icon
illustration
immunity
infection
info
isolated
line
linear
medical
outbreak
outline
pandemic
pathologic
pathology
pictogram
quarantine
respiratory
risk
sign
stroke
symbol
symptom
thin
vaccine
virology
virus
warning
web
website