Question

The process by which the body remembers previous infections and produces antibodies more quickly if that infection is seen again?

Answer 1

by the help of Memory Cells. If your body fights a virus once, the same virus will probably try to attack again. After all the work it took to get rid of that first infection, it would be a shame to have to do it all over again. An amazing feature of your immune system is that it remembers the infections it has fought.