Some parasites enter the body by way of contaminated food or water and some live on the skin and the hair.
Explanation:
There are several parasites in the environment and when they get into a person's body, his/her health can be affected.
Parasitic worms are small animals which can live inside the body. Their eggs are taken into the body, usually by swallowing. The worms then hatch out of the eggs and live in the body.
