We used to self-isolate , didn't we notanan
Children with chickenpox and other childhood diseases, and years ago measles , etc were kept home, people with flu stayed at home and didn't go to A&E unless advised by a GP.
I do remember 'mumps parties' though.
I don't think I would want to be on a plane with other people who just might be incubating this disease.
Pre Warning re Tonight’s Eastenders