Dust accumulates in finger nails and carries the infection. While handling water glasses, fingers should never be dipped into them. Food should never be served with hands. It is safe to boil all food and milk before consuming it. These infections are a result of eating or drinking contaminated or untreated food, milk, water etc.
Infections can also spread by unhealthy habits like sucking thumbs, putting toys in the mouth etc.
No matter how much care parents take, it is difficult to prevent these diarrheas. The biggest problem with diarrheas is not the infection itself, but the loss of fluid and body salts through motions. As the body fluids are depleted, sometimes the child goes into dehydration and if untreated, shock and death may result from it. The following steps can be taken at home in mild and moderate cases to ensure the child's safety. If the problem is severe, you should seek medical help.