My understanding is that it’s less about the number of vaccines being effective against omicron than it is about the timeliness of how long it has been since yo

My understanding is that it’s less about the number of vaccines being effective against omicron than it is about the timeliness of how long it has been since you’ve gotten it. Given the time since you’ve received your last dose, the amount of circulating antibodies in your system has dropped off. Your immune system still has the systems in place to recognize Covid and produce antibodies against it, but given the different structure of omicron the concern is that your system will be less effective in doing so. Getting a third jab, however, will cause your system to immediately start reproducing antibodies again, which seem to still be effective against the variant. I am however, not a doctor nor a specialist in this field so anything I’ve written should be independently checked.