I recall three years in a row coming down with measles, chicken pox and mumps, maybe not in that order. I do remember that I caught mumps during summer and was pissed that it wasn't at a time that I'd miss school. All of those diseases swept through the neighbourhood and all my friends were sick at the same times. That was during the mid-1950's when there were no vaccinations for those diseases yet. The only vaccination we received at the time was for polio. I can remember being in line for that shot at school. I think it had to be repeated every three years.
"The world is my country; all of humanity are my brethren; and to do good deeds is my religion." (Thomas Paine)