The leechlike creatures that live on, and inside, the forgiving body atomic number 18 be as an organism that lives on or in a host and gets its food from or at the expense of its host. They argon put in three main categories of spongers that sack up seduce disease in piece: protozoa, ectoparasites, and helminths. Protozoa are microscopic, single-celled organisms that privy be free-living or parasitic in nature. They are able to multiply in humans, which causes solemn infections to develop. The parasite inhabits the intestines of humans, cattle and many another(prenominal) other animals, and it is typically circulate through contaminated food and water or fecal-oral driveway from individual to person. This includes the parasite, cognize as cryptosporidium, which ca employ the water-borne claps in Milwaukee, WI. Over 100,000 people became feverish and over 200 deaths occurred from complications. It was raise that the municipal water trunk was how it trav eled so fast. This was the largest outbreak ever recorded in the United States. Although the parasite is catching in water it does non grow in water and priggish filtration is needed because it has fully grown resistant to chlorine. The protozoa that are infectious to humans can cause amebic dysentery, giardiasis, toxoplasmosis, and malaria.

Malaria is a protozoon that lives in the bank line or thread of humans can be transmitted to other humans by an arthropod vector (for example, through the stinging of a mosquito or sand fly also known as ectoparasites). Ectoparasites can broadly include blood-suc king arthropods such as mosquitoes (because ! they are leechlike on a blood repast from a human host for their survival), this term is generally used more narrowly to refer to organisms such as ticks, fleas, lice, scabies, and mites that impound or burrow into the skin and remain there for comparatively long periods of cartridge clip (e.g., weeks to months). Arthropods are important in create diseases, but are even more important as carriers or vectors, of many different pathogens that cause...If you want to get a full essay, locate it on our website:
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