I'm pretty sure that I had it twice, no testing involved, but I'm pretty damn sure. Then I had the vaccine. So the first vaccine is equivalent to a third infection and the second vaccine is equivalent to a fourth infection.

Does the body's immune system get better at focusing its energy on destroying the enemy as opposed to total immune response which is inflammatory which makes you feel like crap? As people are exposed more and more would it not make sense that our reaction to the given stimulus is less and less because we're really good at just wiping it out?

Totally clueless. Just making crap up.

Immediate reaction means localized to where the infection is being introduced to your body. as opposed to it had a while before that recognition really kicked in and then the infection had a chance to multiply all over the place which in turn means your antibody/inflammation system has to go into overdrive just based on quantity of cells it has to fight.