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Cysticercosis  The principle economic loss results from condemnation of infected livers by meat inspectors

Cysticercosis  The cysticercus of a second canine taeniid tapeworm, Taenia ovis, infects the cardiac and skeletal muscles of sheep and represents the most important pathological lesion found by United States inspectors in imported Australian mutton

Cysticercosis  In one instance 1,540,000 $ worth of boneless mutton (12.5% of the total shipment) had to be sold as pet food or shipped back to Australia (Arundel, 1972)

Cysticercosis  The cysticercus of the “unarmed” human tapeworm Taenia saginata encysts in the striated muscles of cattle, especially the heart and muscles of mastication

Cysticercosis  Taeniid eggs survive the rigors of the septic tank as well as many contemporary municipal sewage treatment processes

Cysticercosis  Defecating out-of-doors is unavoidable when hunting or camping out, it is easy to see how cattle pastures become contaminated with T. saginata eggs

Cysticercosis  Condemnation of carcass meats for the presence of T. saginata cysticerci results in great economic loss

Human Cysticercosis  The cysticercus of the human tapeworm Taenia solium represents a significant hazard to human health

Human Cysticercosis  Humans who eat incompletely cooked pork may become infected with T. solium by ingesting the larval forms of Taenia solium (formerly known as Cysticercus cellulose), in undercooked pork

Human Cysticercosis  Humans can be infected with cysticerci by ingesting the eggs  The oncosphere hatch out, enter the gut wall, and wander far and wide in the body, slowly developing into cysticerci

Human Cysticercosis In humans, the signs depend on where the cysticerci localize, and sites may include the eye, brain, or spinal cord

Human Cysticercosis  Rare cases of human cysticercosis and coenurosis are also caused by larvae of canine taeniids

Family Taeniidae  The genus Echinococcus contains two species of special importance to veterinary medicine  Echinococcus granulosus and Echinococcus multilocularis

Family Taeniidae  They are very small (2 to 8 mm. long)  Adult tapeworms having only four or five segments of which only the terminal segment is gravid

Family Taeniidae  In E. granulosus, 45 to 65 testes are generally distributed, and the genital pore is located at or posterior to the middle of the segment

Family Taeniidae  In E. multilocularis, 17 to 26 testes are found posterior to the genital pore, which is located anterior to the middle of the segment

Echinococcus granulosus; rostellum with two rows of hooks and four suckers



Immature segment Mature segment Neck Gravid segment Scolex







Protoscolices (hydatid sand)



Cestode Diagnosis Stool examination for eggs of adult forms Gravid proglottides Ultrsound/CT scan for tissue larval forms

Cestode Diagnosis Serology  Immunoblot  ELISA  CFT  IFA  Etc.

Treatment of Tapeworm Infections  Praziquantel  Epsiprantel  Albendazole  Fenbendazole  Nitroscanate  Surgery

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