A parasitic infection is a disease that is transmitted by parasites. Parasites are microscopic organisms that live inside or on the exterior of a larger host, using the host as their food source.1 There are three types of parasites that target humans: protozoa, helminths, and ectoparasites. Protozoa are microscopic, one-celled organisms that can pass to…
Tag: overview
Bacterial Infections
Bacteria are single-celled microorganisms that thrive in many different types of environments.1 They are found in every habitat on Earth including soil, rock, water, artic snow, and even the human body.2 In fact, there are approximately ten times as many bacterial cells as human cells in the human body.3 Most types of bacteria are harmless…