Loading...
How long does humoral immunity last after infection or vaccination? This question is germane, considering the ever-increasing number of novel vaccines and the ongoing occurrence of vaccine-preventable diseases in both developed and developing countries,
To explore this issue, researchers performed a longitudinal analysis of serum antibody titers specific for eight antigens, using 630 serum samples collected over an extended period (up to 26 years) from 45 Oregon National Primate Research Center workers. Samples were retrieved from the center’s serum bank or taken from scheduled blood draws. (Employees had at least 1 sample drawn annually as part of the center’s program to test humans who work in close proximity to nonhuman primates.) In addi…