what is a parasitic diseases
A parasitic disease is an infectious disease caused or transmitted by a parasite. Many parasites do not cause diseases. Parasitic diseases can affect practically all living organisms, including plants and mammals. The study of parasitic diseases is called parasitology.The share of parasitic diseases account for about 14 000 000 deaths per year, representing 25% of global mortality-one in four deaths according to the WHO.he study of parasitic diseases is called parasitology. The share of parasitic diseases account for about 14 000 000 deaths per year, representing 25% of global mortality-one in four deaths according to the WHO.
Parasites are living things that use other living things - like your body - for food and a place to live. You can get them from contaminated food or water, a bug bite, or sexual contact. Some parasitic diseases are easily treated and some are not. Parasites range in size from tiny, one-celled organisms called protozoa to worms that can be seen with the naked eye. Some parasitic diseases occur in the United States. Contaminated water supplies can lead to Giardia infections. Cats can transmit toxoplasmosis, which is dangerous for pregnant women.