unicellular parasites

Unicellular parasites are tiny organisms composed of one cell that live in or on other living beings, such as humans, animals, or plants, and rely on their hosts for survival. They can cause diseases by feeding on cells or tissues, disrupting normal functions. Examples include protozoa like Plasmodium (which causes malaria) and Giardia (which causes intestinal issues). Despite their small size, they can have significant health impacts. They often reproduce within their hosts, spreading infections, and are typically transmitted through contaminated water, food, or vectors like insects.