Among the simplest organisms there are many parasites of animals and humans.Listed below are the parasitic protozoa that cause the most serious and common diseases.
dysentery amoeba
Amoeba dysenteriae is similar to the common amoeba, but is smaller and has a shorter and wider root stalk.It enters the human digestive system through the mouth during the cyst stage.In the large intestine, the amoeba emerges from the cyst and feeds on bacteria without harming the body.The simple organism then begins to penetrate the intestinal wall, feed on red blood cells, and become a parasite.Ulcers form in the intestines and consume the body's energy.Amoebic dysentery or amoebiasis occurs.
The amoeba dysenteriae can enter the bloodstream and reach the liver.Here too, parasites lead to the formation of purulent ulcers.
The amoebas form cysts that leave undigested food residue in the body.Small cysts spread easily.If you don't wash your hands and food, you can become infected.
malaria Plasmodium
Plasmodium is a parasitic protozoan.Certain Plasmodium species cause malaria in humans.The carrier of Plasmodium is the Anopheles mosquito.During an insect bite, Plasmodium parasites enter the host's bloodstream.It travels with the blood to the liver, where it eats, grows and reproduces.After this, many Plasmodium parasites re-enter the bloodstream and begin to inhabit red blood cells, destroying them and releasing their waste products, thus poisoning the host.A person has a fever and is anemic.
If a person with malaria is bitten again by an Anopheles mosquito, the malaria parasites can be transferred from the person to the mosquito.Plasmodium reproduces sexually in mosquitoes.
Malaria is common in Africa.This is a very dangerous disease.Fight malaria by, among other things, eradicating malaria-carrying mosquitoes.
trypanosome
The genus Trypanosoma consists of flagellated parasitic protozoa (closely related to Euglena).Their primary hosts are vertebrates, and their carriers are usually insects.Different representatives of trypanosomes cause different diseases in animals and humans.They mainly live in the blood and cerebrospinal fluid.The best-known and most common disease caused by trypanosomes is sleeping sickness.
The vector of sleeping sickness is the tsetse fly.This disease is typical of tropical Africa.Sleeping sickness develops in two stages: in the first few weeks, patients suffer from fever and pain, and after a month or more, drowsiness, sleep and coordination disturbances, and changes in consciousness develop.The disease is easier to treat in its first stages.
Giardia
Giardia is a flagellated parasitic protozoan.Enterobacteriaceae cause giardiasis in humans and animals, a parasite that lives in the small intestine.
A person becomes infected with giardiasis by eating unwashed food that contains giardia cysts.After emerging from the cyst, lambria attach themselves to the intestines and feed on digested food.
Leishmania
Leishmania is another genus of parasitic protozoa.They cause leishmaniasis in humans and many other animals.The spreader is the mosquito.
There are different types of leishmaniasis associated with damage to various tissues in the body.One of them is the skin disease Pendenski ulcer.
Coccidia
Coccidia parasitize many animals, including worms, arthropods, and fish.They cause coccidiosis, which causes serious damage to livestock and fish farming.
Coccidia colonize in the form of spores containing parasite cells.
Coccidia include Toxoplasma spp.Their representatives cause a widespread disease in humans, such as toxoplasmosis.A person can become infected from pets or improperly prepared meat products.Toxoplasma affects many organs, including the nervous system.