Enterobius vermicularis: Morphology, Life Cycle and Pathogenesis

Enterobius vermicularis is commonly known as threadworm and pinworm. It is found all over the world. Infection of Enterobius vermicularis in human is known as enterobiasis. It is worldwide in distribution. Particularly, it is common in children.  Generally, the mature females live in the vermiform appendix and caecum. Systematic Position Phylum: Nematoda Class: Chromadorea Order: … Read more

Ancyclostoma duodenele: Morphology, Life Cycle and Pathogenesis

Ancyclostoma duodenele is a parasitic nematode worm which is commonly known as old world hookworm. The anterior end of the worm is bent dorsally and thus the name hook worm. It has wide geographical distribution but mostly found in tropical regions. The adult worms live in the small intestine particularly in jejunum, less often in … Read more

Ascaris lumbricoides: Roundworm

The worm is known as roundworm. It is present all over the world where environmental hygiene is low. The adult worm lives in the lumen of small intestine of human. About 807 million to 1.2 billion people are infected with Ascaris lumbricoides throughout the world. Among them, 10 percent people is infected in the developing … Read more

Echinococcus granulosus: Morphology, Life Cycle and Pathogenesis

Echinococcus granulosus is a parasitic worm which belongs to the family Taeniidae under order Cyclophyllidea of class Cestoda. It is also known as Dog tapeworm, Hydatid worm or Hyper-tape worm. It is found all over the world. The larval form causes hydatid disease in man. This disease is also known as human echinococcosis or hydatidosis. … Read more

Taenia solium: Morphology, Life Cycle and Pathogenesis

Taenia solium is also called the pork tapeworm. It is the parasitic organism under phylum Platyhelminthes.  It is found all over the world. It is the endoparasite and adult worm lives in small intestate of man who eat pork.    Systematic Position Phylum:Platyhelminthes Class: Cestoda Order:  Cyclophyllidea Family: Taeniidae Genus: Taenia Species:Taenia solium Definitive Host: … Read more

Taenia saginata : Morphology, Life Cycle and Pathogenesis

Taenia saginata is also known as the beef tapeworm. It is found amongst beef eaters all over the world. The adult worm lives in the small intestine (upper jejunum) of human. This is the unarmed tapeworm of man causing taeniasis and it can cause cysticercosis in cattle. The cattle acts as intermediate host and in … Read more