HOWEVER if you continue to
test negative for the JC Virus there is no reason you should have to stop
tysabri if it is working for you. In fact, stopping Tysabri is shown to cause serious relapses and is not something fun to go through. I would talke to a different doctor about tysabri and get off the holiday idea.
Of course if you test positive for the JC virus, that is a different story entirely. good luck in working this through with your medical provider.