What Is the Difference Between Bacteria and Viruses?

Bacteria and viruses are both tiny microbes that can make us sick, but they work very differently.

Imagine you're playing with building blocks. A bacteria is like a block on its own, it can grow, move around, and even make copies of itself all by itself. It’s like a little person who lives in your body and sometimes decides to cause trouble.

A virus, though, is more like a sneaky thief who needs help from another block to do anything. A virus can't move or copy itself on its own, it has to sneak into a bacteria (or a cell) and use that bacteria’s tools to make more viruses. It's like borrowing someone else's toy to play with.

When bacteria cause sickness, they usually do it by multiplying inside our body and making us feel yucky, like when you get a boo-boo and it gets red and sore.

But viruses are trickier. They hide inside our cells and take over the cell’s factory to make more viruses, which can then jump out and infect other parts of your body, like when you catch a cold or the flu.

So, while both bacteria and viruses can make us sick, they’re like different kinds of players in a game: one plays alone, and the other needs help from others. Bacteria and viruses are both tiny microbes that can make us sick, but they work very differently.

Imagine you're playing with building blocks. A bacteria is like a block on its own, it can grow, move around, and even make copies of itself all by itself. It’s like a little person who lives in your body and sometimes decides to cause trouble.

A virus, though, is more like a sneaky thief who needs help from another block to do anything. A virus can't move or copy itself on its own, it has to sneak into a bacteria (or a cell) and use that bacteria’s tools to make more viruses. It's like borrowing someone else's toy to play with.