Worms are invertebrate animals that belong to several different families.
Worms are animals belonging to the groups Annelida (earthworms, polychaetes), Nematoda (roundworms), Nemertea (ribbon worms), and Platyhelminthes (worms) (flatworms).
The most common kind of roundworm infection is Ascariasis.
Humans can also be inflected with taeniasis – or tapeworm infection.
Other parasitic worms that can cause diseases in humans include liver flukes, hookworms, and pinworms.
Disease Caused by Worms:
Tapeworm: They are intestinal parasites. It cannot live on its own. It survives within the intestine of an animal including a human.
Filariasis: It is caused by a thread.
Pinworm: It is caused by a small, thin, white roundworm called Enterobius vermicularis.