virus - Kids, Britannica Kids

Viruses are tiny particles that cause disease in people, other animals, and plants. Different viruses cause the common cold, influenza (flu), chicken pox, measles, AIDS, and…

Massachusetts State Access » Britannica

AIDS (acquired immunodeficiency syndrome) - Students

What is a Virus? - Just Imagine

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The Virus - National Geographic Kids

coronavirus - Kids, Britannica Kids

Coronavirus Deranges the Immune System in Complex and Deadly Ways

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virus - Students, Britannica Kids

Virus, Definition, Structure, & Facts

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