I appreciate your response and I could tell by some of your other posts that you are an educated person. I am a doctor, but not the medical kind. I am a biochemist and molecular virologist. The recent public outcries about vaccine safety has inspired me to do some research of my own on flu vaccines. There is so much confusion, misinterpretation and junk science on the web that it is no surprise that so many are scared.
What I was referring to in my post to you was the difference between vaccine acquired immunity versus natural immunity from infection. It is well known in the field that while natural immunity is lifelong, this is not necessarily the case with vaccination. For some reason, the immune system tends to “forget” vaccine acquired immunity over time. This is why booster shots are required. It seems that the body does actually know the difference between a vaccine and an infection.
I thought the reason for booster shots was not to remind the body what the antibody looked like (in the case it forgot); but to make the body 'more aware' of this disease. For example, if a disease is a particularily vile and fast incubating bug; having a 1x immune response may not be adequate to prevent an outbreak. Simply stated, the body will fight off the infection, but not as quickly as would be required to prevent irrepairable hard from occuring (such as Polio).
Thus, the booster shot was to create a synthetic response for the body to have a 2x immunity reaction to this particular bug, instead of only having a minor one. If we use Polio as a potential case; the intent may have been to make the origional vaccine so weak (as to prevent the vaccine actually creating the disease) that the immune response, while present, is relatively minor.
If the body 'forgot' antibodies; then it stands to reason that there would be common reinfections of 'Chicken-pox' where most of us will only experience the joy just once in our lives.