Taenia solium eggs can also cause cysticercosis life cycle. A third species, taenia asiatica, the asian tapeworm, although genetically closest to t. At one time, the larvae and adult tapeworms were thought to be different species. Although many species exist, two species, taenia saginata and taenia solium, cause pathology in humans. Taenia solium article about taenia solium by the free. The most striking feature consists of the passage active and passive of proglottids. The zoonotic tapeworms taenia saginata and taenia solium, are known as the beef tapeworm and pork tapeworm, respectively, depending on their intermediate host. Taenia solium, taenia saginata, taenia asiatica, their hybrids and other helminthic infections occurring in a neglected tropical diseases highly. Taenia solium infection and the resulting disease neurocysticercosis are endemic in less developed countries where pigs are raised as a food source. Humans are the only definitive hosts for these three species. Africa, middleeast, central and south america, europe and asia t. Taenia saginata beef tapeworm, taenia solium pork tapeworm or taenia asiatica asian tapeworm. People with taeniasis may not know they have a tapeworm. Cestodes taenia solium north dakota department of health.
The closest tapeworm relatives to two of the human pests, taenia saginata and taenia asiatica, turn up on a genealogical branch with a tapeworm that matures in lions. A panel of cestode dnas including taenia saginata, taenia solium. Taeniasis is the infection of humans with the adult tapeworm of taenia saginata or taenia solium. Taenia solium is the pork tapeworm, a tapeworm belonging to the cyclophyllid cestode family. Taenia solium taeniasiscysticercosis in papua, indonesia. History taenia saginata taenia solium research edinburgh university research at eu, ctvm was initiated by uk gov. Taenia solium and taenia saginata linkedin slideshare. It is found throughout the world and is most common in countries where pork is eaten. Taenia saginata article about taenia saginata by the free. The highest incidence of cryptosporidium was found in both groups with abdominal discomfort. Taenia saginata, called the beef tapeworm, is a common intestinal infection worldwide. Occasionally, appendicitis or cholangitis can result from migrating proglottids. Taenia solium the common name for taenia solium is pork tapeworm i.
It is an intestinal parasite in humans causing taeniasis a type of helminthiasis and cysticercosis in cattle. History of taenia saginata tapeworms in northern russia. Taenia solium taeniasis is less frequently symptomatic than taenia saginata taeniasis. Classe cestoda taenia solium e taenia saginata title. Apr 09, 2017 taenia solium solitaria octavio ybarra. Proglottid is smaller than t saginata and has 7 lateral branches off the central uterus. One is due to eating undercooked pork that contains the cysts and results in adult worms in the intestines. The cestodes tapeworms taenia saginata beef tapeworm and t. Taenia saginata, the beef tapeworm, and taenia solium, the pork tapeworm, are the most common tapeworms affecting humans. Taeniasis and cysticercosis due to taenia solium in japan. Diagnostic tools for taenia solium leslie js harrison stakeholder meeting on taenia solium taeniasiscysticercosis diagnostic tools, who, geneva, december 2015. Beef tapeworm, taeniasis, taeniarhynchus saginatus characteristics.
Humans can also be infected with the larval stage after. Taeniasis is an infection of the digestive tract by adult worm taenia solium, taenia saginata, and. Taeniasiscysticercosis fact sheet world health organization. The restellum resembles the conventional figures of the sun, hence the. Infection with the larval form of taenia solium, t. A size selected genomic dna library was constructed using dna extracted from taenia saginata. Taenia saginata beef tapeworm infection infectious.
The dna was digested using the restriction enzyme ecor 1 under star conditions and the 24 kbase fraction, selected following sucrose densitygradient separation, was cloned in the bacteriophage. Conversely, most patients infected with taenia saginata notice passage of proglottids, which are motile, more numerous, and larger than those of t solium. The highest incidence of cryptosporidium was found in. Pdf taeniasis, caused by infection with taenia saginata or taenia solium, occurs on bali due to the consumption of undercooked beef and. Infection follows consumption of undercooked beef or pork containing cysts. Surveillance, prevention and control of taeniasiscysticercosis. Pdf on dec 9, 2018, mohammed thabit salih and others published taenia solium and taenia saginata find, read and cite all the research you need on researchgate. It is useful to prepare and distribute a poster, booklet or manual dealing with. The common name for taenia solium is pork tapeworm i. The larvae of these organisms are called cysticerci singular. Pdf taenia solium and taenia saginata researchgate. Restate the basic concepts of parasitology define of the various terms related to basic parasitology discuss briefly the life cycle and pathogenesis of medically important parasites apply the knowledge of the life cycle to the principles of laboratory diagnosis learning outcomes. Taeniasis, cysticercosis, taenia solium, taenia saginata, cestodes, coproantigens. Taenia saginata synonym taeniarhynchus saginatus, commonly known as the beef tapeworm, is a zoonotic tapeworm belonging to the order cyclophyllidea and genus taenia.
Taenia saginata article about taenia saginata by the. Differential diagnosis of taenia saginata and taenia. Taenia saginata beef tapeworm and taenia solium pork tapeworm are intestinal cestodes both t. Taenia saginata taeniasis produces only mild abdominal symptoms. Sep 01, 2007 taeniid tapeworm infections in the human intestine are caused by taenia solium, t. Mature proglottid has 1230 lateral uterine branches, can be differentiated from taenia solium 7 quadrate four suckers, unarmed. Humans can become infected with these tapeworms by eating raw or undercooked beef t. High prevalence of taenia saginata taeniasis and status of taenia solium cysticercosis in bali, indonesia, 20022004. Gravid proglottids of left taenia saginata and right t. Transactions of the royal society of tropical medicine and hygiene, vol.
Taeniasis in humans is a parasitic infection caused by the tapeworm species taenia saginata beef tapeworm, taenia solium pork tapeworm, and taenia asiatica asian tapeworm. All topics a b c d e f g h i j k l m n o p q r s t u v w x y z. Who surveillance, prevention and control of taeniasis. Aug 16, 2003 taenia solium infection and the resulting disease neurocysticercosis are endemic in less developed countries where pigs are raised as a food source. Eggs are shed into the environment via human feces, and when ingested by pigs, they develop into tissue cysts, causing cysticercosis. The main feature of this infection is the passage of proglottids in the stool. The free eggs and detached proglottids are spread through the hosts. Taeniasis is the parasitic infection of humans caused by adult tapeworm species. This disease usually causes only mild abdominal symptoms. Taeniasis refers to infection with the tapeworm form of one of three taenia species. Pdf taeniasis and cysticercosis due to taenia solium in. Difference between taenia solium and taenia saginata learn.
Taenia saginata was differentiated from taenia solium infection by the late 1700s. Differential diagnosis of taenia saginata and taenia solium. Taenia saginata andtaenia solium are the two taeniids of greatest economic and medical importance, causing bovine and porcine cysticercosis and taeniasis in humans. Classe cestoda taenia solium e taenia saginata author. The parasitological, immunological, and molecular diagnosis of. Their number allows differentiation between the two species.
Taenia solium, taenia saginata, and taenia asiatica are important. General recognition features can be 10 meters long though usually 25 meters 2000 proglottids 1 cm long with 12 being gravid proglottids have 1520 lateral branches from the uterus and a lateral genital pore scolex has 4 suckers with a. Cattle are the intermediate hosts, harboring the tissue cysticerci in. The restellum resembles the conventional figures of the sun, hence the name solium. Visualization of the branches can be improved by clearing the specimen in lactophenol followed by india ink injection into the lateral genital pore. Jan 12, 2020 taenia saginata is a topic covered in the johns hopkins abx guide to view the entire topic, please sign in or purchase a subscription official website of the johns hopkins antibiotic abx, hiv, diabetes, and psychiatry guides, powered by unbound medicine. Cattle are the intermediate hosts, where larval development occurs, while humans are definitive hosts. Taenia solium, taenia saginata, cestodos, coproantigenos. In the definitive, human, host infections with the adult stage of. T aeniid tapeworm infections in the human intestine are caused by taenia solium, t. The larval stages of the tapewormsm taenia solium and taenia saginata, can produce cysticercosis in humans. Mature proglottid has 1230 lateral uterine branches, can be differentiated from taenia solium 7.
The bestknown etiologic agents, taenia saginata goeze 1782 and t. Injection of india ink in the uterus allows visualization of the primary lateral branches. Global distribution of taenia solium taeniosis cysticercosis. It is worldwide in distribution the infection is common amongst those eating raw or insufficiently cooked measly pork. Taenia solium 1 lecture ii class cestoda 2 common features of class cestoda. Taenia saginata material safety data sheet infectious substances section i infectious agent name. Taenia saginata has 1230 primary lateral uterine branches, while t. Infeksiterutama terjadi di afrika, timur tengah, eropa barat. Difference between taenia solium and taenia saginata. Taenia solium is the pork tapeworm, a tapeworm belonging to the cyclophyllid cestode family taeniidae. Diverse dnabased assays, mainly to discriminate t solium from t saginata infections, and a serological. Taeniid tapeworm infections in the human intestine are caused by taenia solium, t. Tim odempsey, in antibiotic and chemotherapy ninth edition, 2010. Taenia solium and taenia asiatica are acquired from ingestion of undercooked pork.
Taenia saginata definition of taenia saginata by medical. Diagnostic tools for taenia solium and taenia saginata. Infections with these cestodes are therefore a serious public health problem in areas of. Intraventricular cysticercosis is generally single and free inside the cavities. Cestodes taenia saginata north dakota department of health. Taeniasis is the infection of humans with the adult tapeworm of taenia saginata, t. In the americas, paho has released a manual on the practical. The life cycle of taenia solium involves the pig as the normal intermediate host harboring the larval vesicles, or cysticerci and humans as the definitive host harboring the adult tapeworm.
656 583 915 902 49 1414 878 344 1469 181 584 931 1606 825 1160 73 1059 1363 1382 338 1588 30 433 1026 957 1220 476 108 1467 1233 477 421 1089 889 723 1480 814 1206 817 1147 864 371 1425 1382