If a child passes stool three or four times a day it is called diarrhoea.The main victims of this disease are children.About 45,000 children die each year with this disease in Nepal.Diarrhoea is caused mainly by Gartner bacillus,Entireties and E.coli.This is transmitted through faecially contaminated water,contaminated food and drinks and direct contact.Flies also 
act as a Mechanical carries.
Symptoms:
1>Watery is passed.
2>Sometimes Muscles may be cramped.
3>The patient may have complains of intense thirst.
4>Dehydration occurs due to frequent passes tp watery stool.
Preventive Measures:
1>Protect food from flies.
2>Used safe drinking water.
3>clean hands after toilet and before eating.
4>Vegetables and fruits should be properly washed before eating.
act as a Mechanical carries.Symptoms:
1>Watery is passed.
2>Sometimes Muscles may be cramped.
3>The patient may have complains of intense thirst.
4>Dehydration occurs due to frequent passes tp watery stool.
Preventive Measures:
1>Protect food from flies.
2>Used safe drinking water.
3>clean hands after toilet and before eating.
4>Vegetables and fruits should be properly washed before eating.
of intensity depends on many factor such as agents,environment and host,we describe here some important disease which are exixting in our society.
Communicable disease is an illness caused by a specific infectious agent or its toxic products.It is directly or indirectly transmitted from man to man,animal to man,from the environment(though air,dust,soil,water,food,intermediate host,vector etc) to man.The major prequistes for the spread of communicable disease are give as follow.
