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Taenia saginata (synonym Taeniarhynchus saginatus), commonly known as the beef tapeworm, is a zoonotic tapeworm belonging to the order Cyclophyllidea and genus Taenia. It is an intestinal parasite in humans causing taeniasis (a type of helminthiasis ) and cysticercosis in cattle.
Taenia saginata infection is usually asymptomatic, but heavy infection causes weight loss, dizziness, abdominal pain, diarrhea, headaches, nausea, constipation, chronic indigestion, and loss of appetite. It can cause antigen reaction that induce allergic reaction. [11] It is also a rare cause of ileus, pancreatitis, cholecystitis, and cholangitis.
A pair of Taenia proglottids, dried and resembling sesame seeds, each containing hundreds of eggs Life cycle of T. saginata inside and outside of the human body. The life cycle begins with either the gravid proglottids or free eggs (embryophores) with oncospheres (also known as hexacanth embryos) being passed in the feces, which can last for days to months in the environment.
The patient received a diagnosis of Taenia saginata (beef tapeworm) infection. Humans become infected with T. saginata by ingesting cysticerci during consumption of raw or inadequately cooked beef.
The definitive hosts for these Taenia species are canids. The adult tapeworms live in the intestines of animals like dogs, foxes, and coyotes. Intermediate hosts such as rabbits, goats, sheep, horses, cattle and sometimes humans get the disease by inadvertently ingesting tapeworm eggs (gravid proglottids) that have been passed in the feces of an infected canid.
Taenia saginata: Intestines stool worldwide distribution ingestion of undercooked beef Cysticercosis-Pork tapeworm: Taenia solium: Brain, muscle, Eye (Cysts in conjunctiva/anterior chamber/sub-retinal space) stool, blood, imaging of cysts in the brain or any soft tissue Asia, Africa, South America, Southern Europe, North America.
The Taeniidae / t ɪ ˈ n aɪ. ɪ d iː / are a family of tapeworms.It is the largest family representing the order Cyclophyllidea. [1] It includes many species of medical and veterinary importance, as Taenia solium (pork tapeworm), Taenia saginata (beef tapeworm), and Echinococcus granulosus.
Raw or undercooked meats are the major sources of Taenia (pork, beef and venison), Trichinella (pork and bear), Diphyllobothrium (fish), Clonorchis (fish), and Paragonimus (crustaceans). Schistosomes and nematodes such as hookworms ( Ancylostoma and Necator ) and Strongyloides can penetrate the skin directly.