Imagine you're in a classroom with your friends, and one of them sneezes. That tiny droplet from their nose lands on your hand, then it goes straight to your mouth or nose. Now, that sneeze might have brought along something like a virus or bacteria, and now you might get sick too! It's like passing around a secret message, but the message is sickness instead of fun.
Examples
- A kid sneezes near you at school, and suddenly you have a runny nose too.
- You eat off the same plate as your friend who had food poisoning, and now you're feeling queasy.
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See also
- What are virulence factors?
- Why Do Humans Get Sick From Bacteria?
- How Does Lytic vs Lysogenic Cycle Work?
- How does the immune system protect our bodies from illness?
- How do infections spread?