What are parasites and how do they make us sick?
- Written by Vincent Ho, Senior Lecturer and clinical academic gastroenterologist, Western Sydney University
Giardia is an example of a parasite you don't want to catch. Symptoms can include diarrhoea, abdominal cramps, fatigue, weakness and weight loss.From shutterstock.com
A parasite is an organism that lives in or on an organism of another species.
Three main classes of parasites can cause disease in humans: protozoa, helminths, and ectoparasites....