animal
bacillus
bacteria
bacterium
biological
biology
blood
body
cell
consume
contagion
contaminated
culture
decay
diarrhea
die
drink
e coli
elderly
electron
failure
feverish
focus
food
group
haemolytic conditions
healthy
hiv
human
illness
infection
kidney
lifestyle
male
micro
objects
parasitic
pathogen
salmonella
science
stool
subtilis
virus
vomit
water