20s
bacteria
balloon
callout
causative agents
clean
cold
comments
disease
disinfection
flu
frame
germs
guide
hand
hand washing
illustration
infection
infection prevention
infectious disease
influenza preparedness
inspection
lines
message
note
other bacteria
people
person
pointing
pollinosis
posted
poster
prevention
serif
smile
speech balloon
suffering from
think
toilet
trouble
troubled face
upper body
vector
virus
wash
woman
write a note
young