19
avoiding
bacteria
biology
care
cell
cleanliness
cold
concept
coughing
covering mouth
danger
disease
doctor
epidemic
epidemic hygiene
face hand germ
fever
flu
hand washing
health
healthcare
hepatitis
hospital
human
illness
illustration
infection
keeping away
mask
medical
medicine
pandemic
people
pneumonia
prevention
quarantine
research
risk
safety
secure
selfcare
sick
sickness
spread
treatment
virus
virus prevention
wearing a mask