Diseases Caused by Bacteria

Some kinds of bacteria live on you! 
There are millions of bacteria on your skin and inside your mouth, nose, and lungs.
A great many live in your intestines.
Other kinds of bacteria live in the air, in water, or in the top layers of soil.
Bacteria, whether harmful or beneficial, can be spherical, rod-shaped, or spiral.
Each of these harmful bacteria causes a serious illness or disease.

Spherical bacteria

Boils blood poisoning

Sore throat
Scarlet fever

Rod-shaped bacteria


Typhoid fever

Spiral bacterium