Our Innate immunity (1st line of defense) is even more critical than Natural immunity; the latter is a stop gap rescue compartment if pathogen breaches the innate; former is potent and misunderstood
We would at some point need to discuss immunity (since we as a society and globe are now so deep into virus and vaccines and pandemics;-)) by considering a component that is sidelined but is likely the most important component of immunity, this being innate immunity, not natural immunity. The latter (natural immunity) in the true sense is a small contributor to our immune defense and the purist immunologist etc. would argue only gets into action if the pathogen e.g. virus, breaks through the first line of immune defense which is the innate immunity; it is why the innate immunity health is critical; natural immunity, if the virus breaches the innate immunity (first line of defense) is near a stop gap 'rescue' immune compartment or pathway that allows you to recover from disease. If your innate immunity does its job as in children and young people (healthy), you will be asymptomatic and very very mild symptoms. None usually. You would generally not even know you were exposed etc. It is potent and usually vanquishes pathogen that come at you in a stealth vicious manner, via innate antibodies and innate NK (natural killer) cells. Children come with it and it is what protects children and young persons from the range of pathogen coming at them all the time. Yes, natural immunity 'if' the innate is breached, allows for immunological memory but if the innate if working well and does its job, you do not need the natural immunity (second line) to get into action. The single most important contributor to both, individual immunity and herd (population level) immunity is innate immunity (i.e., first line of immune defense). It is overlooked and should be nourished and protected for it is precious and our concern is that the COVID vaccine can damage your innate immunity by 'outcompeting' it and suppressing it and think about that, you are then 'defenseless'. Children would be. gain, this is why I/we say leave our children, our healthy children alone. They will be just fine as their bodies can handle COVID or its variants. Based on all we know, they are fine.