You asked so here we go:
All 3 vaccines work by stimulating an immune response to something called the "spike protein" on the surface of the SARS -CoV2 virus. It's that spikey looking thing you see on all the electron micrographs you see everywhere. The spike protein is recognizable to your immune system the same way a Mercedes hood ornament is recognizable to your eye. You know, if you see that hood ornament, there's a Mercedes attached. So these vaccines teach our immune system to seek out the 'hood ornament", the spike protein, and the virus is destroyed in the process.
So here's the problematic part: how do you teach the immune system to seek out the spike protein. Traditionally (and this is the way the flu vaccines and the current Oxford vaccine work), you attach a recognizable protein ("hood ornament") to a harmless or inactive virus. The immune system generates antibodies to that protein, eventually clearing the harmless virus as well as protecting you if the CoVid virus (which also has the "hood ornament") shows up. Once the harmless virus is cleared, if CoVid never shows up, the reactivity of the immune system goes dormant or slows but is awakened (like latent learning) it if does show up.
The Pfizer and Moderna vaccines are mRNA (messenger RNA) - this RNA is injected and is integrated into our cells, telling them to continuously churn out spike protein, constantly stimulating our immune system. It never turns off!!! And here in lies the danger. I don't like mucking around with cellular genetics and once you turn this "spike production" machinery on, there's no way to turn it off. Like a key put into a lock to turn on an engine and then unable to pull it out and unable to turn the engine off. There is a lot of concern that many of the symptoms of the "long haulers' (prolonged fatigue, brain fog, wasting and the multisystem inflammatory disorder they are seeing in children and adults) are not due to the CoVid virus itself but to the immune response to it. And now you've told your cells to keep chugging away producing the spike protein regardless of the consequences - 1) There's a risk the immune system will just fatigue from the constant stimulation and not continue the protection from CoVid; 2) There's a risk you get a continued hyperimmune response with no way to shut it off (and then the risk of "long hauler" symptoms), or 3) if some cell makes a mistake (as they do) in replicating the spike protein and the product more closely resembles one of our own proteins, there's a risk of additional autoimmune issues, i.e.,our immune system starts to attack our own cells. Of course, if CoVid mutates and the spike protein changes, are you then going to inject more different types of mRNA?
These are my concerns, anyway. I'd take the Oxford / Astra Zeneca vaccine - that's a tried and true delivery system. But I'd like to see at least year's safety data on the mRNA vaccines before considering them.Anyway, this is me. I would have to imagine Fauci and the FDA have considered this. On the other hand, they are so desperate to slow or stop this pandemic, and can't wait the additional 6-12 months for more safety data, they may just be going with what they know. You have to be careful with new delivery systems. My feeling is, go with what you KNOW is safe, even if it is a little less effective (which we don't really know yet.)
Love you, honey.