My son has Chicken Pox even though he has had his vaccinations for it and it has left me with a lot of questions. I have read some stuff on it and it seems that they don't know how long the protection lasts. Chicken Pox are worse the older you are so that seems like a contradiction. I'm also wondering what effect this will have on getting shingles when your older. They say that he will have a milder case of the Pox - we will see.