Viruses & Diseases

While both can cause disease, viruses are not living organisms, whereas bacteria are. Viruses are only "active" within host cells which they need to reproduce, while bacteria are single-celled organisms that produce their own energy and can reproduce on their own.

Infectious diseases are disorders caused by organisms — such as bacteria, viruses, fungi or parasites. Many organisms live in and on our bodies. They're normally harmless or even helpful. But under certain conditions, some organisms may cause disease.

By using the resources below, we hope teaching about viruses and infectious diseases becomes a little simpler. By learning how viruses and infectious diseases work, we can also learn how to prevent them and stay healthy!