Why is the immune system so fast to respond to allergens, but take days to fight off a legitimate infection?
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“Fight” is the key word here.
Allergens trigger the immune system to respond, but they’re not actually harmful. Your cell cops swarm the area and then stand around doing nothing useful because there’s no real threat.
An actual infection is different. The cell cops show up and find an army of hostile foreign pathogens that must be hunted down and destroyed. These pathogens have devised a vast number of devious tricks to evade or defeat your immune system, and so it’s an actual fight that only ends when either you or the invaders are dead.
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