> This is evidenced by the surge in infections a child (or a new nursing or medical student) receives on starting daycare/hospital. I don't think this is evide

> This is evidenced by the surge in infections a child (or a new nursing or medical student) receives on starting daycare/hospital. I don't think this is evidence that getting sick as a nurse in daycare is good for you. This only evidences that people adapt to an repeat infection and environment with pathogens. The comparison should be made against a person that never had to go to daycare and never had to get sick there -> would they be more or less healthy. I am not an immunologist of-course, but everything I read indicates that this conventional wisdom is build on misunderstanding of the immune system .