bacillus
bacteria
bacterium
biology
cancer
care
cartoon
cell
collection
contagious
danger
dirty
disease
emblem
epidemic
finger
flu
germ
health
healthcare
hiv
hygiene
hygienic
icon
illness
infection
influenza
issue
medical
medicine
micro
microb
microbe
microbiology
microorganism
microscopic
molecule
organism
palm
risk
science
set
symbol
unhealthy
unhygienic
viral
virus