💉 How Do Vaccines Work?

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🛡️ What is a vaccine?

A vaccine is a medicine that trains your body to fight germs (like viruses or bacteria) without making you sick.

Think of it as a practice lesson for your immune system 🧠💪

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🦠 What are germs?

Germs are tiny living things that can make us sick:

• Viruses 🤧
• Bacteria 🦷

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⚙️ How a vaccine works (step by step)

1️⃣ Vaccine enters the body

• It contains a weak, killed, or tiny piece of a germ
• This piece is safe

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2️⃣ Immune system learns

• Your body sees the germ and says:
  “Hey! This doesn’t belong here!” 🚨
• It makes antibodies (tiny soldiers 🛡️)

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3️⃣ Memory cells are created

• Your body remembers the germ
• These memory cells stay for a long time 🧠

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4️⃣ Real germ attacks later

• If the real germ enters:
  • Antibodies attack it fast ⚔️
  • You don’t get sick (or only very mildly)

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🧠 Easy way to remember

Vaccines teach your body how to fight before the real fight happens

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🌟 Why vaccines are important

• Protect you from serious diseases
• Stop germs from spreading
• Protect babies and older people 👶👵
• Help keep schools and communities safe 🏫

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💪 What about side effects?

• Mild pain or fever 🤒
• This means your immune system is learning
• Serious problems are very rare

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🌍 Diseases vaccines help prevent

• Polio
• Measles
• Tetanus
• COVID-19
• Flu

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📌 One-line summary

A vaccine helps your body learn to fight germs so you don’t get sick later.

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