Various creatures can live in the human body. Those organisms that damage human health through their important activities are called parasites. Parasites in the human body are not necessarily worms, they can also be other organisms that cause harm to the human body. Dangerous parasites can inhabit the entire territory of the earth. So, what are parasites and how do they affect humans?
Types of parasites
There are more than 2, 000 representatives of parasites in the human body. They are divided according to their type, mode of existence, and mode of reproduction. There are also obligate and facultative parasites.
Obligate parasites can only live in the host. Obligate intracellular parasites are completely dependent on the host, so they will not seriously harm him.
Optional part of life can live freely, and the other part can be kept in the host. They can affect various internal organs and tissues. Some of them existed for a long time, but at the same time they did not manifest themselves in any way. The appearance of others is accompanied by characteristic symptoms.
Helminthiasis
Human helminthiasis is caused by a variety of worms. Currently, there are more than 300 kinds of worms in humans. Found in worms, there are both obligate parasites and parasites. In addition, according to the form of interaction between parasites and host organisms, they are divided into two groups: ectoparasites and endoparasites. They belong to different categories and can parasitize in various organs. Worms are one of the most common diseases in humans; the most common are worms. Not only can you use dirty hands, but it can also cause worms to appear in the body. You may be infected by pets, livestock, fish, and dirty water. The disease depends on which worm enters the body. To understand the possible consequences of a worm, you need to find out what a worm is. Knowing which worms occur and their characteristics, you can protect yourself from infection.
- Round bug. Most worms in this category are parasites. The main difference in this category is: dioecious cavity, existing anus, and primary body cavity. The most common types of worms in humans are roundworm, pinworm, trichinella, and whipworm. Worms are worms, that is, they do not need temporary hosts for maturation and reproduction. All their important activities can occur in one organism. Certain worms in livestock may pose a threat to humans, such as Toxoplasma gondii.
- Tapeworms are parasites in the human body, mainly living in the intestines. There are two types of tape worms: biological worms and ground worms. Most worms of this species are biological worms. In order to develop, they need to enter the body of intermediate hosts, namely livestock and fish and molluscs. The most common tapeworms in this group include bovine tapeworm, broad tapeworm, Echinococcus occidentalis, and alveolar cocci. The worms can grow to a large size and live in the human body. The longest worm, the broad-striped worm, can reach 25 meters in length.
- Suction cups. One of the most complex creatures that can live in the human body. All these parasites can infect various organs. Any type of this worm can cause flukes. Flukes, liver flukes, and lanceolata are all flukes.
- Crawlers or spiny worms are the smallest tape worms. These types of parasites are very rare in humans. You can get them from sick fish. Since they have no digestive system, they only parasitize in the intestines. There are also representatives such as giant scrapers in the human body.
Biologists
Biologists are the simplest creatures. They belong to the heterogeneous group of organisms. Protists cannot be classified as animals or mushrooms. Protists are unicellular, colonial, and less common are multicellular organisms. Some of them can be parasitic in the human body. The most dangerous organisms are malaria parasites and dysentery amoeba. Parasites can cause diseases such as malaria and dysentery. Various types can cause serious illness in humans. And, if it is recognized, you must consult a doctor.
Insect diseases
Various insects, especially those living in tropical countries, can cause insect diseases. Insect diseases can cause various pathological changes in human organs. Most commonly, the eyes, skin, and gastrointestinal system are affected. A variety of insects can cause insect diseases:
- Mosquitoes, fleas and bugs-infect through unprotected areas of humans.
- ad and flies-infect humans, placing offspring on skin wounds in the form of eggs or larvae. You can also infect certain types of flies by swallowing larvae.
All insects that parasitize the human body have the ability to release toxic substances. Depending on the pathogen, clinical symptoms will appear. Insects can produce allergies and mechanical effects on humans.
TOP-7 most common parasites
Parasites that live in the human body can cause serious diseases. We provide the 7 most creepy and terrifying parasites that can live in the human body. From the list, you can find out which parasites live in different countries and their dangers.
- Filaria.A slender and long worm found in tropical and subtropical regions. Parasites are carried by mosquitoes. Filariasis causes terrible diseases like elephant disease. In countries where the parasite is found, more than 120 million residents suffer from elephantiasis. Filaria parasites in the body, clogging the lymphatic vessels. After that, the person began to grow stronger and stronger.
- Anisakids.Anisakid larvae have long been considered harmless. However, in the middle of the twentieth century, scientists discovered that fennel parasitic disease can even cause death in some cases. You may be infected with parasites in poorly processed seafood (including fish). Fennel is one of the most terrifying parasites in humans. The entry of Anisakid larvae into the stomach can cause tumor formation and the development of ulcers.
- One of the most famous parasites is thecattle tapeworm.A person may be infected by worms through unclean hands or raw meat, and therefore may not be aware of the disease for a long time. Worms of this species can cause severe weight loss. Within the size of the owner, it can reach several meters. Sometimes they live in the body for many years without showing up at all.
- Schistosoma.With the development of tourism, this parasite has begun to expand its geographic scope. Schistosomiasis parasites live in tropical wild forests and enter the human body when swimming in water bodies. It can cause severe liver and bladder disease. It is especially dangerous for children. In children, schistosomiasis can cause anemia and prevent its growth.
- Risht.Live in the subtropical regions of Asia and Africa. Dracunculiasis is a dangerous disease. While the female Rishta lays the larva, the larva penetrates the skin of the host. The person feels severe pain and itching. It is easy to get dracunculiasis when drinking dirty water.
- Parasites mainly affect the digestive tract, liver and skin. However, certain species still exist in the brain, such ascystic bacteria.They can live up to 30 years and cause mental disorders: hallucinations, depression, short-term memory loss.
- Toxoplasma gondii.One of the most common worms on earth. There are two types of toxoplasmosis: congenital and acquired. In the first case, the infection occurs in the uterus. In most cases, it can cause serious pathological conditions and lead to the death of the fetus. Acquired diseases affect the central nervous system and may cause brain cancer. Toxoplasma gondii often causes the development of schizophrenia.