Tysabri DOES compromise certain parts of your immune system. It prevents certain immune cells from crossing the blood/brain barrier and going after the inflamed myelin.

During the trials, it was noted that some of the patients suffered higher levels of infections. Whether the Tysabri had anything to do with you suffering longer with the virus you caught from your kids is another question.

I would note the information and advise your doctor. Then there will be a record of it for future analysis.

Hope you are feeling better soon.

Harry