Answer:
Toxoplasma: A parasitic spore-forming protozoan that can sometimes cause disease in humans.
Listeria: A type of bacterium which infects humans and other warm-blooded animals through contaminated food.
Norovirus: Is a very contagious virus that causes vomiting and diarrhea.
Campylobacter: A bacterium that sometimes causes abortion in animals and food poisoning in humans.
