People are mystified as to why kids who have been repeatedly infected with SARS-CoV-2 are getting sicker from other infections?
Are they also mystified as to why objects fall downwards when you drop them?
Are they baffled when they burn their hand on a stove?
Let me spell it out for them.
SARS-CoV-2 damages your body tissue.
If your body tissue is damaged, you're vulnerable to infection.
It does damage your immune system, but it doesn't even need to damage your immune system when it trashes body tissue.
Damage makes you vulnerable to damage.
If your car is in a mild crash and then repaired, it will potentially be more vulnerable if it is involved in a second mild crash. Its safety systems may have been compromised.
Every extra new car crash increases the risk that the safety systems will fail.
How does damage open you up to more damage?
If you can't get your head round the idea how a virus that damages your lungs could open you up to viruses that damage your lungs, try reading this: