Please tell me about illnesses that require children to be absent from school or daycare. Also, how long will they have to be absent if they are sick?

Please consult with your school, nursery school, family doctor, etc.
Infectious diseases that should be prevented in schools are classified into three types according to the School Health and Safety Law Enforcement Regulations. In order to prevent outbreaks, there is a basic period in which sick children must be absent, but the timing of coming to kindergarten and school varies depending on the physical condition and condition of the individual.
First, inquire about the illness at the nursery school or school. Talk to your doctor about how long you should take time off.