How are different types of worms man

Helminthiasis among the people are born when it is ingested one of the 300 species of parasites. At the same time the patient may be the master from 1 to 5 different worms. You need to know what types of worms man meet more frequently, as you look, as you experience the infection.

Ossiuri

The types of worms

The fear of being infected by the worms leads to the fact that patients tend to believe that the worms guilty of any deterioration. Helminths – representatives of the invertebrates, having extremely primitive structure. They can't exist outside a host organism, as well as receive the nutrients and conditions for the business of farming.

You need to list what the worms are the person. Diseases are: round, flat, and tapeworms.

Most often found the following types of worms:

  • ossiuri;
  • roundworms;
  • Toxocara;
  • flukes;
  • taenia;
  • Trichinella;
  • the hookworms.

Ossiuri

Among all the parasites and worms in humans the most common are ossiuri (or Enterobius vermicularis). These are small round worms with a semi-transparent body, of a whitish colour. Ossiuri separately-floors, the males can reach 4-6 mm, females – up to 10 mm. the Worms are spread all over and cause enterobiasis. It is more common in children.

Ossiuri are transmitted from person to person in case of ingestion of eggs or infestations through the anus. The entire life cycle of the elminto passes into the intestinal lumen. In the process of moving of the eggs, leaving the larvae and mature in a supportive environment. In the large intestine individuals will mate, after which males die. The females go with the peristalsis of the rectum and at night lay their eggs in the perianal. Then you die and you get sick, a person can discover their underwear or toilet paper. If you consider it carefully, as it seems worms person, it is possible to compare them with small worms, transparent.

The eggs are transferred in an environment where the spread of the disease among other people or re-auto-infection.

Note! Ossiuri are in the linen for the house, objects of daily use, animal dander, foods. The eggs outside of the human body retain their vitality for up to 2-3 weeks.

Worm

Worm

Worm – round type of helminth. Separate individuals-floors. Live worm – red worms fusiform. The length of the body of the female, up to 40 cm, and male – up to 20 cm Thick parasites – up to 6 mm. The dead parasites have a hue whitish, semi-transparent. If you examine the photos of the worms roundworms, you may notice that the female has a straight body, and the boys bent to one side.

Note! Mating and spawning occurs in the intestinal lumen. So one day an individual can leave up to 200 thousand eggs with dense. Protects individuals from the negative effects of the environment. The larvae matured in the ground within 2-3 weeks. The further development of individuals is possible only in case of contact with the intestine of the host.

The infestation of these parasites occurs when the contact with the disease face, eating dirty vegetables, berries, or green. The mechanism – fecal-oral. The man – the main host of Ascaris lumbricoides.

Only invasive eggs of the worm are found in the stomach, then in 12 iv international forum intestine. There parasites are all outward-facing, and damage to the mucous membrane of the organ of the fall in the small vessels of the digestive system. Then the worms are in the vein of the portal and the drain of blood is applied to the internal organs: liver, heart, lungs. In the respiratory system worms rise to the oropharynx, causing cough. Move ascaris internal organs – the stage of migration the parasite.

If swallowed with the saliva, or cough, worms are still found in the lumen of the digestive tract. It is the intestinal phase of the elminto.

Note! The entire life cycle of Ascaris lumbricoides of the takes about 60-70 days. Helminth ova can persist in the soil up to a few years.

Trichuris trichuris

This geohelminth is found only in humans. The infection occurs when you consume vegetables or fruits, water, that contain the parasite eggs.

Externally the worm remember the long hair with the thickened rear part. The size of the body of the parasite is up to 5 cm, These worms in the human body live in the intestine and lay up to 10,000 eggs per day. The duration of life of the parasite is up to 4-6 years.

Offspring lander module exits with the feces in the environment, and mature in the soil. Externally the eggs resemble translucent barrels with the eyelids to the poles. After the human infection of trichuris trichuris is released from the shell, and in a few weeks they reach sexual maturity.

Toxocara

The principal owners of these parasites are dogs and cats.

The parasite of a male and female. Can reach 10-20 cm in length, body thickness up to 3 mm. Externally, these worms seem to thin filaments, of a whitish colour. Their life expectancy is 5-6 months.

The owner of a pet can be their notice to calais of your pet after defecation or scheduled degelmintizatsija. Live parasites were slightly yellowish, and very prolific. Every female inside of the main body, the host may lay up to 150 thousand eggs per day. The eggs with the dense irregular sheath to fall in the environment and gained up to the state invasive within 1-5 weeks.

The infection occurs when the contact with the ground, use berries, vegetables without a thorough washing. At risk, the people living in the countryside. The eggs Toxocara fall within the digestive tract of man. The larvae of the worms come out of the shell and embedded in the intestinal mucosa. Their migration is reminiscent of the shift in ascaris.

Note! However, these types of worms in the person does not pass the full cycle of development, are scattered all over the body with a current of blood and are deposited in the internal organs. The worms grows the connective tissue and can be a very long time to be in an inactive state. Suspect the toxocariosi children or adults is extremely difficult. The infection from man to man is impossible.

Trichuris trichuris

Trichinella

This round of worms that live in the muscle tissue and in the intestinal lumen. They are the lethal cause of the disease trichinosis.

Trichinella spiralis everywhere, with a tendency to the natural foci in forest areas. This is due to the great diffusion of the disease in some animal species. Trichinella separately-floors, their description is this: the specimens yes 3-4 mm long, the body of the worm is long, acute at the head end.

Guest pest can be an animal or a person. Disease in humans occurs when they consume infected meat containing the larvae of the worm (most often pork). The life cycle of trichinella is performed inside a master without output environment for the maturation of the larvae:

  • when ingested with food parasites quickly complete the 3 stages of development the larvae;
  • adults mate in the intestinal lumen, after which the males are killed;
  • gestation the fertilized eggs and the release of these young fish occurs in the body of the females (egg-live birth);
  • the female lays its larvae in the wall of the intestine;
  • the larvae with the blood circulation spread throughout the human body;
  • only to survive the parasites, trapped in tissue, with intense circulation of the blood – skeletal muscles;
  • the larvae surround the capsule and live in a person at 20 years old.

Flukes

Flukes (or flukes) – is the plate of worms. Known more than 7000 species of these parasites, and diseases in humans cause only 40 of them. For its location in the body of the people, the following types of worms-flukes:

  • the flukes (shistosoma);
  • flukes, intestinal;
  • flukes liver;
  • the flukes;
  • lung flukes.

The most common worms is Fasciola hepatica, Opisthorchis felineus, Schistosoma haematobium. Most of the types of flukes spread almost everywhere, only shistosoma live mainly in the countries of Asia, Africa and South America.

For these helminths characteristic development with the change of different hosts and the alternation of free-living and parasitic stages. Most of them, before meeting the man lives in the bodies of shellfish, fish. Leave the body of an intermediate host, the worms swim freely in the water. Therefore, you experience an infestation of pests, larger animals – cats, cattle. When the schistosomiasis man becomes the master of the elminto the penetration of the latter through healthy skin during the bath.

In other cases, intermediate hosts can be pets. Swallow the worms in irrigation, the use of infected larvae of the grass.

Size flukes depending on their species – from a few millimeters up to tens of centimeters. The body of the worm flattened, it resembles the shape of a worksheet or tab. The end of the head parasite equipped with multiple suction cups, for fixing inside a host organism. These worms have a primitive internal structure. Their system of organs developed to provide the power and the reproduction of their own kind.

Note! The shell of the egg flukes from side to side thickened, and the other has the cover. This characteristic structure makes it possible to diagnose the disease in humans.

Toxocara

Tapeworms

Tapeworms (or cestody) – more long worms. In the human intestine may live in one of the 5 types of worms. Their names indicate the size, the origin of the larvae.

  • a tapeworm (because difilloʙotrioz);
  • pork tapeworm, cause taeniasis);
  • the bull the tapeworm (because beef tapeworm infection);
  • dwarf tapeworm (because geminilepidos);
  • echinococcus (echinococcosis).

These parasites were flattened along the body, consisting of segments that are repeated. Front-end cestodes ends with a "head", with the characteristic authority of the anchor. When degelmintizatsija the worms can leave the party. Patients describe the individual members of the cestodes, as the white of the instruction, similar to rice.

The internal structure of these worms is extremely primitive: the majority of them also lacks the digestive system and the nervous little developed. This circumstance does not prevent them, is very widespread, as well as their reproductive apparatus is presented to the authority in every part of the body and ensures a high fertility.

Note! The worst representative cestodes consider a wide lentetsa, which can reach 25 m in length. Dwarf tapeworm – the smallest of this group of parasites. Its length is no greater than 5 cm.

The duration of an individual's life can be pretty great. Thus, the porcine tapeworm, alone occupies the intestine and is found in the human body for up to 20 years.

The hosts of cestodes at various stages of development becomes the cattle, vertebrate inhabitants of the water bodies and clams. The infection occurs when you consume enough cooked or fried meat, fish. The worms affect the various internal organs, can cause serious complications.

Trichinella

Hookworm

They are small worms-only-traducitur helminths, live in 12 iv international forum human intestine. When infected with helminths destroy the wall of the intestine and its digestive enzymes.

The most common types:

  • Necator americanus;
  • Ancylostoma duodenal.

Hookworm spread all over, but more often than not can be found in the countries of North and South America, in India, in China, in the South of Europe.

The size of these worms not exceeding 14 mm – Ancylostoma duodenal or 11 mm Necator americanus. Separate individuals-floors. After mating lay eggs in the intestinal lumen.

The larvae together with the faeces, and that the masses fall in an environment where they performs their maturation. In the earth in a matter of 1-2 weeks the eggs appear to be new individuals, which undergo a phase of non-invasive or non-contagious, and filariidae (invasive) larvae.

Filariidae larvae are able to remain alive and ready for the penetration in the body of a person for 8 weeks. The highest concentration of these worms in the soil you get in the hot and humid climate, with faecal pollution.

Note! Are the most frequent outbreaks of disease in the mining areas or mines. The infection takes place through the intact skin when you walk barefoot.

Necator americanus or hookworm New world characterized by a bending of the at the end, has a pale pink color. This parasite causes the disease necatoroz.

Human worms Ancylostoma duodenal seem to be small, thin worms, white in color. They cause the development of hookworm ("egyptian mange" or "the eruption of the miners").

By analyzing the different types of worms, you can not say that some of them are really are a danger to man and the other does not deserve attention. In the case of suspected infection, parasites should immediately consult a doctor and pass an examination.

17.05.2019