Yeah I'm among the people that never get regular colds or flus either generally.
I think it is more like your immune system is super active. It might be that intracellular chronic infections shift it into being imbalanced towards TH2. So we can't clear the intracellular bacteria but we're super effective at getting rid of typical extracellular pathogens. I don't know if I fully buy this as the immune system is really complex, but something along these lines could be happening.
In my mind this makes more sense than the explanation that it means our immune systems aren't fighting anything. People with AIDS truly have an immune system that isn't fighting. They generally get colds and never get rid of them, to the point where they die from pneumonia.
Post Edited (project) : 6/10/2016 8:39:42 PM (GMT-6)