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Understanding How Vaccines Work
Learn about vaccines and test your knowledge!
What is a Vaccine?
Vaccines are an important part of public health. Learn more about Vaccines on Wikipedia.
How Vaccines Work
Vaccines train our immune system to fight germs by introducing a harmless piece of a virus or bacteria. This doesn’t make us sick but helps our body recognize and fight the germ in the future.
Once the vaccine is in the body, the immune system creates antibodies, which stay ready to attack the germ if it shows up again, preventing serious illness.
Vaccines help stop disease spread and protect vulnerable people. They’ve eliminated diseases like smallpox and saved millions of lives. More vaccinations protect everyone, including those who can’t get vaccinated.
The first vaccine was created in 1796 to protect against smallpox!
Vaccines have helped nearly eliminate diseases like polio in many parts of the world!
Did you know that vaccines save up to 3 million lives each year worldwide?
Vaccine Quiz
Test your knowledge by answering the questions below:
1. What do vaccines do?
a) Make you sick on purpose
b) Train your immune system to fight off germs
c) Cure all diseases instantly
2. How do vaccines help communities?
a) By preventing diseases from spreading
b) By making people grow taller
c) By giving people superpowers
3. What is the first vaccine designed to protect against?
a) Measles
b) Smallpox
c) Polio
4. How do vaccines protect vulnerable people?
a) By making them immune to diseases
b) By preventing disease spread
c) By creating stronger diseases