My biology education was many years ago in high school so I have forgotten most of it. I have been reading though and I think I have the basics of how vaccines like Pfizer and Moderna work (mRNA).
My question is, it seems they have engineered mRNA to enter your cell and have it produce certain proteins which will render you immune to the COVID-19 virus.
Is this different than what was done before? I thought the way vaccines worked (or used to work) was you injected a weakened or inactive version of the virus and your body just saw it like any other viral infection. Your immune system would rally to fight the new infection and learn its ways which the body remembers for the future. If you get infected again your body is prepared and jumps on it before it has a chance to cause any trouble.
But now are we just telling the cells directly what to do? Does this mean the immune system has been trained Matrix-style to “know” what COVID-19 looks like? Actually, do the mRNA even engage the immune system or is it just telling your cells how to reject COVID-19 when it arrives so it can’t start replicating?