The virus that causes Covid-19, called SARS-CoV-2, goes through a life cycle just like you do when you play with your toys.
How the Virus Gets In
How the Virus Makes More Copies
Inside your cell, SARS-CoV-2 turns your cell into a copy machine. It makes lots of new virus particles, just like you can make many copies of a drawing with a photocopier. Then these new viruses break out of the cell and go on to infect more cells, like when toy spies escape from one room and go to another.
How the Body Fights Back
Your body sends out soldiers (white blood cells) to attack the virus. Sometimes, they win, and you feel better! Other times, the virus wins, and you get sick again.
When the soldiers finally beat the virus, the spy is gone, but sometimes it leaves behind a note, so your body remembers how to fight it next time.
Examples
- A child catches a cold from their sibling, like how the SARS-CoV-2 virus passes from person to person.
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See also
- How Does Structure and Replication of Bacterial Cells Work?
- How does DNA replication ensure accurate genetic copying?
- {"response":"{\"What is SARS-CoV-2 virus?
- What is replicate?
- What's the evidence against SARS-CoV-2 being engineered by humans?