@mystery-ak
I just got my second Covid-19 vaccination today,and the pharmacist told me "There,you are good now for another 8 months before you will need another one."
WTF??????
I thought this was good for Covid-19,period?
Because Covid is still relatively new, busy medical people are not always up to date on what's known. The political biases of the MSM meant that news perceived as "good for Trump" was buried or suppressed. For example, our primary care physician learned of the Eli Lilly and Regeneron monoclonal antibody treatments from my wife and I.
Because Covid is still relatively new, only a handful of people received one of the vaccines more than a 9 or 10 months ago. So that 8 months is how long we currently know vaccine-produced antibodies persist, though the antibodies may actually persist in meaningful concentrations for a couple of years or more, and recipients' immune systems also have T-cells that "know" how to produce antibodies against SARS-CoV-2, so even after the concentration of antibodies declines they can be replenished.
The bottom line,
@sneakypete, is that you're good to go for at least a couple of years to come, and probably longer than that. Pharmacists and doctors just can't say that with certainty because of the limits of Covid knowledge in general and their own lesser knowledge.
One of the weird consequences of
Operation Warp Speed's success is that we're still not very high up the learning curve about the SARS-CoV-2 virus.