Glossary

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Vv

Vaccine

A substance that is usually injected into a person or animal to protect against a particular disease.

Virus

An extremely small living thing that causes a disease and that spreads from one person or animal to another. It can only reproduce itself by taking over a cell in the body of its host.

Vogt Koyanagi Harada’s disease

A disease associated with chronic inflammation of melanocytes (specialized cells that produce a pigment called melanin). Melanin gives skin, hair, and eyes their color.