How Coronavirus Became a Global Pandemic | WSJ?

Imagine the coronavirus is like a sneaky little guest that came to visit your classroom and didn't want to leave, but then it invited all its friends from around the world to join in.

At first, only a few people got sick. It was like when one kid in class starts coughing, and you think, "Oh no, maybe they’re just a little chilly." But the virus is sneaky, it jumps from person to person easily, like passing a toy around the room.

Soon, more and more kids started feeling unwell. The classroom got crowded with sick people, and the virus didn’t stop there. It jumped on planes, trains, and buses, just like how you might take your lunch from one table to another at recess. It went from country to country, making many places feel like they were also having a sneezing party.

Then came the biggest problem: not enough people had medicine or protection to stop it. It was like if all the kids in the school started coughing at once, and there wasn’t enough tissues for anyone!

That’s how coronavirus turned into a global pandemic, like a classroom sneezing party that grew into a worldwide celebration of germs!