Name the causative organisms for the following diseases.
A. Elephantiasis
B. Ringworm
C. Amoebiasis

Hint: Disease causing agents are known as pathogens. Causative organisms or agents are biological pathogens like virus, bacteria, fungus, protozoa or parasite which causes disease. Generally pathogens release harmful toxins after entering into human bodies and harm body cells, tissues and functions during replication and cause disease.

Complete step by step answer: Elephantiasis also known as lymphatic filariasis is a parasitic disease which is transmitted to humans through mosquitoes which carry microfilariae worms. These worms affect the lymphatic system of the body and cause slowly developing chronic inflammation of several body parts such as arms, legs, scrotum, breast etc. due to accumulation of lymph fluid in affected areas.
-Causative organisms of Elephantiasis are mainly three types of parasites such as Wuchereria bancrofti, Brugia malayi, and Brugia timori.
-Ringworm another name is dermatophytosis is a fungal infection on skin. Such infection looks like red itchy, scaly patches, resembling like a ring, may be red on raised outer edges and inner whitish. It can be transmitted from one body part to another and one person to another.
-Causative organisms of Ringworm are mainly three types of fungus such as Trichophyton, Microsporum, and Epidermophyton.
-Amoebiasis also called as amoebic dysentery is a parasitic infection which infects the human gastro-intestinal tract. It is most common in tropical areas and it spreads through untreated water, eating uncooked food. Symptoms of amoebiasis include, stomach pain, fever, loose stools, or bloody stool etc.
Causative organisms of Amoebiasis are protozoan Entamoeba histolytica.

Note: To prevent yourself from such diseases like elephantiasis, amoeba, ringworm some preventive measures should be taken in consideration like drink clean water or boil the water before drinking, eat clean and well cooked food, use mosquito nets, proper health check-up and proper diet should be maintained.