See but on that theory unless you are exposed and (while possibly symptomless) building up immunity or antibodies, your immunity is shrinking rapidly. To where you need to be boostered frequently. And unless you are a know it all who knows whether you have been exposed and building up such immunity, you must presume you are not. And this goes back to my earlier point. If you haven't had or been exposed to Covid, the protection from the initial 2 doses will diminish rapidly and only frequent boosters will thwart a potentially bad case of Covid. It's amazing to me that a lot of people here do not understand this and listen like sheep to the pseudo scientific babble of their local politicians.