The simplest parasites: types, how dangerous, prevention

We must begin with the fact that the simplest organisms appeared a long time ago, they are considered to be the most ancient inhabitants of the planet. Throughout their existence, they have become incredibly resistant to various tests. They can survive even in the most dangerous environments.

These microorganisms have chosen a very convenient way of life for themselves - parasitism, especially in the human body. As mentioned earlier, these microorganisms are incredibly "harmful" and persistent, which is why it is sometimes so difficult to get rid of them.

The "location" of the parasite can be of several types. The first type includes endogenous microorganisms, i. e. , those that are in the human body. The second type includes exogenous parasites that easily "settle" on the skin and cause various skin diseases.

Types of protozoan parasites

There are basically 4 types of parasites that "live well" in the human body.


These include lamblia, trypanosomes. This class is the representative of the most ancient representatives of parasites. They got this name due to their locomotor system: flagella. The size of the parasites themselves are simply microscopic, constant in shape, and usually multiply in two parts.

the simplest parasites of lamblia in the human body

They are very dangerous to humans and animals, if they get into their bodies they cause huge damage. They also cause various diseases. Such as American carotid fever, skin leishmaniasis and many others. They can parasitize on the intestines, blood and skin. Thus, it negatively affects human health.


The development of these types of protozoan parasites is very complex. The class is currently known to contain about 1, 400 species. All MPs "choose a parasitic lifestyle" and are extremely dangerous to humans and animals. Reproduction occurs by cell division.

protozoan parasites

Most often, the tissue and organ of a person or animal is chosen as the "residence". This species causes many diseases. For example, malaria, toxoplasmosis.


These include balantidia. There are about 7, 000 different species. The locomotor organs of these parasites are cilia, of which there are many.

protozoan parasites of balantidia

Such a feature is the presence of two cores. They have a constant physique and shell. Reproduction is usually done by division. This species is no less dangerous to humans and animals than the previous two.


These include the abdominal amoeba. They are the most primitive of all types and classes. There are about 10, 000 different species! They do not have a permanent physique. It parasitizes humans and animals.

protozoan parasite dysentery amoeba

Most often, they choose the digestive system for their activities. Because of them, one can experience very severe poisoning. In some cases, deaths are also common.

These types show great resistance to various "tests". After all, an infected person is constantly trying to fight parasites, but it doesn’t always succeed because of how resistant it is to any action.

Why they are dangerous, what diseases they cause

The simplest parasites are indeed very dangerous to human health. They can cause a variety of diseases that have certain consequences. Under no circumstances should the simplest parasites be underestimated, as they can significantly harm humans.

Diseases caused by protozoan parasites:


Such a disease is characterized by certain differences. Sometimes it is relieved and then the relief is replaced by aggravating symptoms. The main symptoms are headache, fever, nausea, vomiting, cramps.

the mosquito is a carrier of protozoan parasites and malaria

For many years, chitin has been considered the best treatment. However, there are also deaths from this disease where medicine is developed at a low level.


Another no less dangerous disease, the consequences of which can also be sad. The pathogen is dysentery amoeba.

Symptoms begin to appear 7 to 10 days after infection. These include headaches, general malaise, fever, and some people may experience upset stomach. This is followed by complications that are expressed in liver problems. If the patient does not start treatment on time and does not go to a specialist, the consequences will be irreversible.


The pathogen of the disease is Gondia Toxoplasma. Symptoms of this disease include damage to the eye, suffering from the nervous system, and the cardiovascular system. Very often at first the infection is not remarkable as if the rhinitis goes away.

protozoan parasitic toxoplasma gondii is the pathogen of toxoplasmosis

Infection during pregnancy is very dangerous. Even if the child survives, this is likely to lead to complications and damage to the eyes or nervous system. Thus, despite the first symptoms, it is essential to consult a doctor.


It is caused by a microorganism like balantidia. Symptoms of this disease are abdominal pain, indigestion. In some cases, high body temperature and poisoning are also possible.


Leishmania is considered to be the pathogen of the disease. Ulcers appear with the appearance of skin and mucous membranes. Edema can often occur with mucocutaneous manifestations. Because these diseases are associated with the respiratory system, they can be fatal.

Leishmaniasis is mainly found in hot countries. This disease is quite common and occurs in 87 countries.

As you can see, the simplest parasites are incredibly dangerous to human health, despite the simple structure of microorganisms. They can cause irreparable damage to the human body and can have certain consequences and complications.

How they are transmitted

There are 4 most common ways to get infected:

  1. Contact - household. . . This type is manifested by a violation of health measures or hygiene rules. Infection can result from a variety of activities: the use of other people’s things, especially personal care products, utensils, and the like. Therefore, it is very important to follow the rules of personal hygiene, have your own personal care products and under no circumstances use others.
  2. Stool - oral. . . This type occurs as a result of contact with feces or vomiting. The simplest parasite first gets into the hands or food of the "new farmer" and then into his body.
  3. From food. . . This type manifests itself as a result of consuming contaminated food. It can be poorly cooked fish or meat, unwashed vegetables and fruits, dairy products.
  4. Transferable. . . This type occurs as a result of transmission during a bite from an infected object, i. e. , through the secretion of saliva.

How to get rid of them

After reading the article, this question will certainly arise. Infections with the simplest parasites are very common, so the issue of getting rid of them is incredibly relevant.

As mentioned earlier, when the first symptoms of infection appear, you should see a doctor. The skilled artisan may prescribe certain tests and trials. After they are handed over, the doctor will make an accurate diagnosis. Thereafter, treatment should be resumed urgently. Self-medication is also not recommended because it is a professional who can help you make the right diagnosis and prescribe appropriate treatment. In most cases, doctors begin treatment with a variety of medications that help eliminate parasites and speed up human healing.

In modern times, there are many different good drugs that help infect protozoan parasites. There are a wide variety of drugs on the market that allow a particular patient to find the right drug.

Preventive measures

In order not to encounter the above problems, it is imperative to follow certain rules as well as take preventive measures.

The most effective rules are those that children teach at school. First of all, do not forget to wash fruits and vegetables thoroughly. It can also heat treat or cut off the skin.

Also, you can’t eat raw fish, not fully cooked meat. In order to complete the product, it is essential to complete the container, monitor the temperature order and time. Casual sex should be avoided. And you also have to go through regular medical checkups.