In contrast, when pork tapeworm larvae lead to illness, it is called cysticercosis. When adult tapeworms cause human illness, doctors use the name taeniasis to describe the infection. Cysts within the brain can cause seizures. Within the tissue, the larva forms a cyst. Thus, in its human host, the larva gets stuck in tissues such as the muscles, liver, and brain. Because the larva is not in a pig (the preferred host of a pork tapeworm), it cannot go through its normal life cycle. The larva then burrows through the wall of the bowel to enter the bloodstream. However, when a person eats an egg from pork tapeworms, the egg hatches in the bowel and the larva emerges. The eggs of the beef tapeworm also do not affect people. The copepod is eaten by a fish, which then becomes contaminated with the tapeworm, thus completing the life cycle. These eggs need a different host called a copepod, which is a small fresh-water shrimplike animal. The eggs of the fish tapeworm do not affect humans. These eggs can also get onto the hands of humans and then into foods that they are preparing. These eggs are then released onto soil and eaten by cattle or pigs, in which they hatch, enter the bloodstream, and form cysts in the meat, completing the parasitic life cycle. If a child or adult has an adult tapeworm, they will pass segments filled with eggs in their stools. The segment is about 0.5 to 1 inch in length and can sometimes be seen moving in the stool or on the anus. A proglottid separates from the adult and travels out of the intestines with the stool. The adult tapeworm has up to 1,000 segments called proglottids, each of which contain 30,000 to 100,000 eggs. The parasite grows within the child’s bowel to become an adult tapeworm. When a child eats tapeworm cysts in undercooked beef, pork, or fish, the cyst survives the stomach acids and releases the larvae. Your child may have a tapeworm infection and have no symptoms. Contaminated food contains cysts of the parasite. Children can develop these diseases by eating raw or undercooked meat from animals or fish that are infected with tapeworms. They affect people through contact with contaminated human feces found in soil, fresh water, or food. Tapeworms require human hosts to live out their life cycles. These may include Taenia saginata (beef tapeworms), Taenia solium (from pork), or Diphyllobothrium latum (from fish). When they do, any of a number of tapeworm species may be involved. Tapeworms can cause intestinal infections.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |