What is a toxoid vaccine?
Quick Answer
A toxoid vaccine protects against a disease caused by a bacterial toxin, not the bacterium itself. It uses an inactivated toxin to train the immune system.
The Full Story
Some bacteria make toxins that are responsible for the worst symptoms of disease. Toxoid vaccines use a detoxified version of that toxin so the body can make antibodies against it without being harmed. The classic examples are the tetanus and diphtheria vaccines. These vaccines have saved millions of lives because they prevent the toxin from doing damage even if exposure occurs. Toxoid vaccines are often given in childhood and then boosted later in life.
Key Facts
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