What is the medical meaning of amnamnestic, as in "anamnestic follow up" or "anamnestic diagnostic variable" ?

Enhanced response: Usually in response to a repeat immune response. The first episode of exposure to X can cause an immune response to X. Repeat exposure to X causes an enhanced immune response. ie. amnamnestic response. This is the basic of a vaccination. When the body is exposed to the pathogen it ill remember this exposure so that on repeat exposure to the pathogen many antibodies are formed and protection