What term describes the disease caused by the invasion of parasites?

The term that accurately describes the disease caused by the invasion of parasites is "infestation." Infestation specifically refers to the presence of an invasive species, particularly parasites, within the host. This condition is often characterized by the parasites living externally on the surface of the host, such as lice on the skin or fleas on animals, leading to various health issues.

In contrast, the term "infection" is typically used to describe diseases caused by microorganisms such as bacteria, viruses, or fungi, which invade tissues and multiply internally, rather than being classified as parasites.

"Contamination" generally refers to the presence of an unwanted substance in a particular environment or material and does not specifically indicate the presence of parasites or the disease they cause.

"Colonization" refers to the successful establishment and growth of microorganisms or parasites within a host but does not typically imply disease unless it causes infection. Thus, when focusing on diseases caused by parasites, infestation is the most accurate term to describe that condition.