How Does A day-by-day look at how the flu infects your body Work?

A day-by-day look at how the flu infects your body is like watching a tiny army sneak into your castle and take it over bit by bit.

The flu virus is like a sneaky little soldier that gets inside your nose or mouth. It could be from touching something someone who has the flu touched, or from a cough or a sneeze in your face.

On Day 1, the virus starts to multiply, it's like tiny copies of itself are being made in your nose and throat.

By Day 2 or 3, these new viruses start to move through your body, like a little parade. They travel down your windpipe and into your lungs.

Your body’s defenders, the white blood cells, see all this activity and start fighting back. It's like when you're playing tag and someone tries to run past you; you chase them down!

This fight makes you feel sick, with aches, a fever, and maybe even a sore throat or cough.

By Day 4 or 5, your body has usually won the battle, and you start to feel better, like after a big game where you're tired but proud of how hard you played.