Explain cycle of worm infection. Write in detail harmful effects of worm infection in children. Methods of prevention and benefits of worm control in children.

Harmful effect of worms on childrens' health: 
Tiredness and giddiness.
Loss of appetite.
Stomach ache vomiting and dysentery.
Blood in stool, anemia, malnutrition.
Swelling in stomach, continuous coughing.
Loss of weight. 
Precaution from worms: 
Wash hands before eating and after toilet.
Wash fruits and vegetables before eating.
Drink clean or boiled water, wear shoes.
Keep nails small and clean.
Use toilets, keep cleanliness around toilets. 
Advantages of worm controls: 
Children can go to Anganwadi or school daily.
They remain active and their immunity increase.
Their development occurs at a faster pace.