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What is the definition of vaccine?

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A vaccine is a substance that helps protect against certain diseases. Vaccines contain a dead or weakened version of a microbe. It helps your immune system recognize and destroy the living microbe during a future infection.

SOURCES: CDC: "Key Facts about Antiviral Drugs and Influenza (Flu.)"  MedicineNet web site: "Flu Glossary of Terms." , 27th Edition, 2000.


Stedman's Medical Dictionary

Reviewed by Carol DerSarkissian on May 19, 2019

SOURCES: CDC: "Key Facts about Antiviral Drugs and Influenza (Flu.)"  MedicineNet web site: "Flu Glossary of Terms." , 27th Edition, 2000.


Stedman's Medical Dictionary

Reviewed by Carol DerSarkissian on May 19, 2019

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What is the definition of virus?

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