Transmission of E. histolytica from man to man occurs through its encysted stage and infection is effected through the ingestion of these cysts in food or drinks. It is to be noted that mature quadrinucleate cysts are the infective forms of this parasite. The contamination of food and drinks is occurred by: i. Faecal contamination of drinking water, vegetables and [...]
In this article we will discuss about the morphology of lung fluke (Paragonimus Westermani). Adult lung fluke is thick, fleshy, oval in shape, reddish brown in colour, about 8-12 mm long and 4-6 mm in diameter. General plan organisation is more or less the same as that of Fasciola. Its anterior end is slightly broader than the posterior end. The [...]
In this article we will discuss about the life history of lung fluke (Paragonimus Westermani). Although the majority of the adult specimens occur in the lungs, their digestive system can cope with a variety of food materials, because they occasionally found in tissues such as brain, liver, spleen, intestinal wall, eye, muscles or even kidneys. P. westermani passes its life [...]