Tag: diseases caused by protozoa

Any disease that can be transferred from infected person to healthy is called as communicable disease such as malaria because malaria is caused by Plasmodium and transferred from infected to healthy by the help of vector i.e., mosquitoes. Whereas cancer (caused by abnormal cell growth), Heart attack (caused by abnormal metabolism) and diabetes (caused by abnormal secretion of hormone) are the non-communicable disease

Sleeping sickness is curable if treatment is given quickly, however, if left untreated the disease is fatal. Once in the second stage of the disease, when the parasite has crossed the blood-brain barrier, treatment becomes much more aggressive with more toxic drugs needed to kill the parasite. So, the correct option is "C" (Cerebrospinal fluid).

Protozoan diseases are caused by the organisms belonging to the Kingdom Protista, called Protozoa.

Entamoeba histolytica is an endoparasile lives in the large intestine of man. It lives in tissues of caecum and colon of large intestine. The pathogenic form cause amoebiasis and hepatic amoebiasis. Thus, the correct answer is option A.

Sleeping sickness is caused by two germs (protozoa), Trypanosoma brucei rhodesiense and Trypanosomoa brucei gambiense. The more severe form of the illness is caused by T. brucei rhodesiense. Tsetse flies carry the infection. Thus, the correct answer is option A.

Entamoeba histolytica is a microscopic endoparasite of man and is commonly found in the lumen of the upper part of the large intestine, that is the colon. In chronic cases, they get into blood circulation and migrate to the spleen, liver, lungs, gonads, and brain, where they produce secondary complications.

Entamoeba histolytica complete its life cycle in two stage on one host only infective stage and colon invasive trophozoite stage.  In infective stage, infection occurs by the ingestion of tetranucleated cyst through the contaminated food and water. So, the correct answer is option B.