A parasite is an animal or plant that lives in or on another animal or plant (called the host). A parasite gets nourishment from its host without helping the host.

Current as of: November 18, 2017

Author: Healthwise Staff

Medical Review: E. Gregory Thompson, MD - Internal Medicine & Anne C. Poinier, MD - Internal Medicine & Adam Husney, MD - Family Medicine & W. David Colby IV, MSc, MD, FRCPC - Infectious Disease & Leslie A. Tengelsen, PhD, DVM - Epidemiology