Sometimes your child may not be able to attend school or day-care because of an infectious disease.
Of course, this can be a very stressful time. As a parent who has vaccinated his children, I am grateful that my children have missed out on measles, mumps, rubella, chickenpox, meningitis etc. But, they have had their fair share of colds, vomiting and diarrhoea illnesses. As a parent you don’t want your child to be unwell. But when they were unwell I (or my wife, mostly) have had to have time off from work to help care for them. Being at school would be no fun, you can’t concentrate on your lesson with a nose constantly dripping onto your writing, hiding from the bright lights that make the headache worse, or having to run off to the toilet to vomit or poo more watery diarrhoea. The best place for a miserable child is to be with a parent, unless really sick and then that would be in a hospital.