Pathogen

Key Stage 4

Meaning

A pathogen is a micro-organism which causes an infection.

About Pathogens

Pathogens are sometimes referred to as germs.

Pathogens are a cause of disease in organisms.

Pathogens can be passed from one organism to another.

There are 4 main types of pathogen you should know:

• Bacteria
• Fungus
• Protozoa
• Virus