Vaccines are like shields that help our bodies fight off germs, even when those germs change a little bit.
Vaccines teach your body how to recognize and stop germs, like a virus. When you get a vaccine, it's like showing your body a picture of the germ so it can remember what it looks like. Then, if the real germ comes along, even if it has some new features, your body can still spot it and fight it off.
Germs Changing Shapes
Sometimes, germs change shapes, just like how a banana changes from green to yellow. These are called variants. A variant is like a slightly different version of the same germ, maybe it looks a little different or moves a bit faster.
But even if a germ changes shape, your body still remembers most of what it looked like before. That means your shield (vaccine) might not stop every single germ right away, especially if it's really different, but it will still help you feel better and avoid getting very sick.
So vaccines are like strong shields that work even when germs change a little bit, just like how a raincoat keeps you dry, even if it’s drizzling! Vaccines are like shields that help our bodies fight off germs, even when those germs change a little bit.
Vaccines teach your body how to recognize and stop germs, like a virus. When you get a vaccine, it's like showing your body a picture of the germ so it can remember what it looks like. Then, if the real germ comes along, even if it has some new features, your body can still spot it and fight it off.
Examples
- A child gets vaccinated, but later catches a cold from a new virus strain that spreads easily.
- A teacher who was fully vaccinated starts feeling sick after being around students.
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See also
- Covid-19: Can vaccines keep up with variants?
- How effective are vaccinations against the new COVID variants? | COVID-19 Special?
- How do vaccines protect us from infection?
- How do mRNA vaccines work to protect against viruses?
- How do mRNA vaccines protect against viral infections?