We are so far past the actual treatment I'm not sure that TY would be bad for us. We worry about our immune system but...
My wife has been sick 5 times this year. Once with the flu, and is now on her 4th Cold that has kept her home from work this year. This one actually sent her to the doctor she felt so bad. She gets them from her co worker who brings them to work from her kids.
I have not even busted a tickle in my throat, a 10th of a degree worth of fever, or even one little wave of nausea.
I feel pretty confident once we hit one year we are fairly safe for anything.