This article is about the organism. For the infection, see taeniasis.
Taenia saginata
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Platyhelminthes
Class:
Cestoda
Order:
Cyclophyllidea
Family:
Taeniidae
Genus:
Taenia
Species:
T. saginata
Binomial name
Taenia saginata
Goeze, 1782
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. Cattle are the intermediate hosts, where larval development occurs, while humans are definitive hosts harbouring the adult worms. It is found globally and most prevalently where cattle are raised and beef is consumed. It is relatively common in Africa, Europe, Southeast Asia, South Asia, and Latin America.[1] Humans are generally infected as a result of eating raw or undercooked beef which contains the infective larvae, called cysticerci. As hermaphrodites, each body segment called proglottid has complete sets of both male and female reproductive systems. Thus, reproduction is by self-fertilisation. From humans, embryonated eggs, called oncospheres, are released with faeces and are transmitted to cattle through contaminated fodder. Oncospheres develop inside muscle, liver, and lungs of cattle into infective cysticerci.[2]
T. saginata has a strong resemblance to the other human tapeworms, such as Taenia asiatica and Taenia solium, in structure and biology, except for few details. It is typically larger and longer, with more proglottids, more testes, and higher branching of the uteri. It also lacks an armed scolex unlike other Taenia. Like the other tapeworms, it causes taeniasis inside the human intestine, but does not cause cysticercosis. Its infection is relatively harmless and clinically asymptomatic.[3][4]
^Eckert J. (2005). "Helminths". In Kayser, F.H.; Bienz, K.A.; Eckert, J.; Zinkernagel, R.M. (eds.). Medical Microbiology. Stuttgart: Thieme. pp. 560–562. ISBN 9781588902450.
^Somers, Kenneth D.; Morse, Stephen A. (2010). Lange Microbiology and Infectious Diseases Flash Cards (2nd ed.). New York: Lange Medical Books/ McGraw-Hill. pp. 184–186. ISBN 9780071628792.
^Bogitsh, Burton J.; Carter, Clint E. (2013). Human Parasitology (4th ed.). Amsterdam: Academic Press. pp. 244–245. ISBN 9780124159150.
^Winn Jr. Washington; Allen, Stephen; Janda, William; Koneman, Elmer; Procop, Gary; Schreckenberger, Paul; Woods, Gail (2006). Koneman's Color Atlas and Textbook of Diagnostic Microbiology (6th ed.). Philadelphia: Lippincott Williams & Wilkins. pp. 1282–1284. ISBN 9780781730143.
Taeniasaginata (synonym Taeniarhynchus saginatus), commonly known as the beef tapeworm, is a zoonotic tapeworm belonging to the order Cyclophyllidea...
Asian countries as an unusual species, it is so notoriously similar to Taeniasaginata, the beef tapeworm, that it was for a time regarded as a slightly different...
Taenia solium, the pork tapeworm, belongs to the cyclophyllid cestode family Taeniidae. It is found throughout the world and is most common in countries...
cysticercosis. Types of Taenia that cause infections in humans include Taenia solium (pork tapeworm), Taeniasaginata (beef tapeworm), and Taenia asiatica (Asian...
contamination by bacteria and parasites such as Toxoplasma gondii and Taeniasaginata. According to the World Health Organization, when basic hygienic rules...
intestine of carnivores, like canids. It is related to Taenia solium, the pork tapeworm, and to Taeniasaginata, the beef tapeworm. It is commonly found in the...
many species of medical and veterinary importance, as Taenia solium (pork tapeworm), Taeniasaginata (beef tapeworm), and Echinococcus granulosus. The Taeniidae...
species of tapeworms if they eat undercooked meat such as pork (Taenia solium), beef (T. saginata), and fish (Diphyllobothrium), or if they live in, or eat...
helminth is generally daily, and can occur up to six times per day for some Taenia species. Adult trematodes lay smaller numbers of eggs compared to cestodes...
worms of Taenia. It became a tradition to refer to the larva of Taenia solium as Cysticercus cellulosae, that of beef tapeworm (T. saginata) as Cysticercus...
known as Rodentolepis nana, Vampirolepis nana, Hymenolepis fraterna, and Taenia nana) is a cosmopolitan species though most common in temperate zones, and...
Taenia hydatigena (thin-necked bladderworm, causative agent of cysticercosis) is one of the adult forms of the canine and feline tapeworm. This infection...
parasite Taeniidae, which consists of livestock parasites in the genus Taenia and parasites that encyst in humans of the genus Echinococcus Anoplocephalidae...
in the digestive tract or related ducts. Examples are the pork tapeworm (Taenia solium) with a human definitive host, and pigs as the secondary host, and...
et al. (1986). "Successful treatment of Diphyllobothrium latum and Taeniasaginata infection by intraduodenal 'Gastrografin' injection". Lancet. 2 (8516):...
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