Yeah, true that. With natural infection you get BOTH lymphocytic memory of the disease AND antibodies to the disease. With a vaccine you ONLY get the latter.

Yeah, true that. With natural infection you get BOTH lymphocytic memory of the disease AND antibodies to the disease. With a vaccine you ONLY get the latter. And it's the lack of that balanced duality that creates the risk of ADE or Antibody Dependent Enhancement which is far more dangerous than getting the disease naturally.