India accounts 65% of soil transmitted worm infections  cases in south east asia. worms can affect all age group of children .Worm infections can have several harmful effects on a child's health. 

Here are some ways in which worm infections can harm a child's health:

1. Malnutrition: Worms can compete with the child for nutrients, leading to malnutrition. This can result in stunted growth, impaired cognitive development, and reduced immune function.

2. Anemia: Certain worms, such as hookworms, can cause chronic intestinal bleeding, leading to iron deficiency anemia in children. Anemia can cause fatigue, weakness, and decreased cognitive function.

3. Intestinal problems: Worms can cause a range of gastrointestinal problems in children, including abdominal pain, diarrhea, and vomiting. Itching around anus & painful micturition-usually by thread hood infections .can affect child night sleep .Sometime can cause weight loss in children despite eating good food 

4. Chronic fatigue: Worm infections can cause chronic fatigue syndrome in some cases, leading to persistent tiredness and lack of energy in children.

5. Impaired cognitive development: Chronic infection with worms can lead to cognitive impairments in children, affecting their ability to learn, concentrate, and perform well in school.

6. Reduced immune function: Worm infections can suppress the child's immune system, making them more susceptible to other infections and illnesses. It is important to note that the specific health effects of worm infections can vary depending on the type of worm involved and the severity of the infection. It is always recommended to seek medical attention if you suspect that your child may have a worm infection.