How do germs make us sick?
Germ Invasion Battle
How do germs make us sick?
You wake up with a scratchy throat and a stuffy nose. Your head feels foggy. "I'm sick," you groan. But what does that actually mean? What's happening inside your body right now?
Meet the troublemakers: germs. They're tiny living things — bacteria and viruses — so small that a million could fit on the period at the end of this sentence. They're everywhere: on doorknobs, in the air, on your phone. Most are harmless. Some are even helpful. But a few are looking for a place to set up camp and multiply.
