Not the OP, but antibodies are just one part of a fairly complex immune system and it does not make too much sense to concentrate just on them. Antibodies are proteins and their level goes down over time naturally. What really interests you is the level of immune response on subsequent exposure to the pathogen, which may be pretty robust even if antibodies are low or undetectable at the moment of new exposure.
We obviously do not know yet whether we can get permanently robust immune response to SARS-CoV-2, either from vaccines or from natural infection; the virus is only two years old. We know that we can get permanently robust immune response to the viruses you mentioned in your post. But this cannot be easily generalized to any new virus that comes along.
We obviously do not know yet whether we can get permanently robust immune response to SARS-CoV-2, either from vaccines or from natural infection; the virus is only two years old. We know that we can get permanently robust immune response to the viruses you mentioned in your post. But this cannot be easily generalized to any new virus that comes along.