PF Riley wrote:
By the way, I had to have a rubella booster shot as an adult - the vaccine
had worn off.

It's important to know that the determination that your immunity from
the vaccine had waned was probably based on your serum antibody level,
which is a poor surrogate marker for actual immunity.

You're right, but it was required by law in my state when I
married. (Unmarried couples can skip the blood test and subsequent
re-innoculation.) I even had to sign a statement saying I would use birth
control for the next six months. I couldn't BELIEVE it!

I also feel confident that I could adequately remove him from the company
of adults who are not immune so that I would be endangering no-one else.

I would not be so confident, as chickenpox is contagious for a few
days before the first lesions appear, and frequently with chickenpox
the parents were not aware of a recent exposure.

Good point. So where do you stand on vaccinating four year olds for
chickenpox?

Wendy