I’ve had to re-schedule some of my lectures because of a Measles outbreak amongst the students at Meiji University (at least one other Tokyo University closed, and I’ve heard rumours that many/most of them closed). They closed the university for a week and since I’m giving my lectures on a Saturday this ended up covering two days.

It just shows what happens when you don’t have good coverage of MMR in the population. Measles, like many so-called “childhood diseases” is a lot worse if you get it as an adult.