On any given afternoon outside of the cheerful, modern white building, parents congregate to wait for their kids. Chit-chat includes the typical fodder like play dates and birthdays, or who was cast in the school play. But occasionally the topic of illness arises — which is where things can take a turn towards the atypical. You might, for instance, hear about “chicken pox parties,” where healthy kids come over to sick kids’ houses to catch the disease.