Getting measles as a child arguably falls into the category of net benefit because of the infection/immunity continuum. A woman who contracts measles as a child confers robust transplacental immunity on her baby who is then protected until they are in an age group where measles is unpleasant but not dangerous. The child is then protected for life, and if female passes robust transplacental immunity to her babies. And so on and so on. Vaccination interrupts this continuum. I’m not saying we shouldn’t have measles vaccination as an option; I just think it’s important to recognise that this infection/protection continuum exists, and that interrupting it is not without problems.