被遗忘的疾病—血吸虫病(4)

These eggs enter different parts of the person's body.

They enter the intestines. And they enter the bladder.

This is where the body keeps liquid waste, urine.

Some of these eggs are expelled from the body, in human waste.

Over their life, these eggs will infect many other people.

But not all of the eggs leave the body.

Some are trapped in the digestive system and the urinary system.

The digestive system is the body's organs that process food - including the stomach, liver, and intestines.

It also includes the systems that process solid human waste.

The urinary systems process liquids, in particular, liquid waste.