Taenia solium Pork tapeworm Hook tapeworm Taeniasis solium

Taenia solium Pork tapeworm / Hook tapeworm Taeniasis solium or pork tapeworm infection Larval stage (Cysticercus ) : Cysticercus cellulosae Disease: Cysticercosis

Taenia spp. adult worm The chain of proglottids is called the strobila, and may be composed of less 1. 000 proglottids. T. solium may reach 6 m.

Epidemiology: n Prevalence: worldwide, where humans and pigs interact, and pork is eaten raw or undercooked. n Uncommon among non-pork eaters. n Can occur in any person residing in endemic areas, even in vegetarians because of mode of infection is contamination of food with eggs.

Morphology: v T. solium resembles to T. saginata, but it is shorter. v It length less than 3 meters ( because the number of proglottids fewer than 1000 & has smaller gravid proglottids). v Armed tapeworm of man. v It has a globular scolex with four suckers and rostellum with a double circle of alternating large and small hooks, that gives it a solar appearance. v There is a neck and it has a long flat body.

A globular scolex with four suckers and rostellum with a double circle of alternating large and small hooks.

hooklets rostullum suckers The scolex of T. solium

T. solium (pork tapeworm) Body Structure: Scolex and Proglottids

Carmine s. Taenia solium Scolex

Taenia solium

v Mature proglottid closely resembles to that of T. saginata proglottid

Taenia solium

v Gravid proglottid smaller than T. saginata proglottid, contain 9 -10 or 7 -12 main lateral uterine arms on each side.

v Gravid segments are expelled passively in chains of 5 -6 at a time and not singly. v Gravid proglottids contains approx. 30, 000 - 50, 000 eggs.

v. The eggs of T. solium and T. saginata are indistinguishable. With stain With Iodine Taenia spp Egg.