The human body is rather amazing. Day in and day out they work hard to digest food, pump blood and oxygen, send signals to our brains and fight disease. But there is a group of tiny invaders that can hinder these natural processes and make us sick- these are called germs.
A germ is a micro-organism that causes disease. The four major types of germs are bacteria, viruses, fungi and protozoa. They can invade plants, animals and people and sometimes make us sick. Germs are so sneaky that we won’t even know that our bodies have been invaded until we start to show symptoms.