Taenia nematode and caudate

solium nbsp; nbsp;Teania:

It is also called pig tapeworm and tapeworm because humans are usually infected with only one worm and in rare cases infected with a small number of worms, and then they are less in length.

It can live up to 25 years, and the only tapeworm can cause a serious illness for the sufferer and those living with it, cysticercosis.

The armed tape is the only tape in which a person can be a host, intermediate and final at the same time.

Geographical distribution:

It is especially widespread in countries whose residents are accustomed to eating raw or undercooked pork, such as the Far East, Europe, Central America and Black Africa.

And its injuries are very few or no in the Islamic and Jewish peoples who forbid eating pork, and the number of its injuries in the world is estimated at 5 million.

Habitat: The old worm lives coiled on itself in the region of the jejunum and its heads are embedded in the mucous.

Form: It is 2-4 meters long, and in rare cases may reach 8 meters, and its body consists of 800-1000 pieces.

The head: a small spherical 1 mm in diameter with four prominent suckers and a protruding rostellum on which two rows of hooklets of varying lengths rest. nbsp;

Neck: thin, 0.5 mm in diameter.

Pieces:

Ripe: square in shape.

Bearing: longitudinal in shape and measures 126 mm, meaning that its length is twice its width.

Male and female reproductive organs:

The number of testes in each piece is 200-150.
Its ovary consists of three lobes.
The number of branches of the uterus of the carrier segment is 7 - 12 (10 branches on average).
Its genital orifices on the right and left open regularly.
The uterus of the carrier piece contains an average of 40,000 eggs.
The egg: morphologically similar to the egg of the bare tapeworm (although its radial plans are thinner and more numerous, its circumference is more rounded, and its size is larger, but it cannot be distinguished by a light microscope) and differs from it by an important feature, which is that it is infective to humans.

Cysticercus celulosae:

Thin-walled, translucent, 510 mm in diameter, appears bright white with a clear liquid, and within it is a closed protrusion, with two rows of spines, that looks like a dense area on one side of the cyst and can survive for five years.

The cellular cyst is characterized by several features that make it easier to prevent than the bovine, which is that it is large and numerous in number and is located in easy-to-see places such as the subcutaneous tissue and under the tongue in pigs.

Methods of transmission of infection:

Intestinal tapeworm monocytosis (human definitive host):

The cystic caudate is the infective larval stage. The infection is transmitted to humans by eating raw, undercooked, or smoked pork containing the acellular caudate.

Cysticercosis (Human intermediate):

It is dangerous for the afflicted and for those who are in contact with him: the egg here is the infective phase, and a person is infected with it in one of the following ways:

Swallowing food and water contaminated with eggs.

- Transmission of eggs by the fecal-oral route through hands contaminated with eggs, which is the most common method (external spontaneous infection).

- Reversible perineal movements that push the pieces or eggs towards the duodenum, so they hatch and the embryo is released from the thorns (internal self-infection).

life cycle: