If someone gets ill often but always recover does that person have strong or weak immune system?
In: Biology
They could have a weak immune system and no immunity to weak diseases. Because of this, some weak diseases everyone is already immune to (and/or didn’t even notice when they had it) will make the person show symptoms. However, their immune system will work after this, and they should develop immunity after getting sick. It can happen to someone from an other country/continent when he migrates.
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