[peter12]

Originally Posted by kdogg

There are only a handful of case of measles, mumps, rubella each year.

From the first site I Googled (don't know how old these are):
Measles: approx 1 in 2,720,000 or 0.00% or 100 people in USA
Mumps: approx 1 in 702,842 or 0.00% or 387 people in USA
Rubella: approx 1 in 747,252 or 0.00% or 364 people in USA

If my child is generally at home most of the time, if I were a betting man, I would say he's probably not going to get these diseases being at home.

Is this your child?