43/F/Missouri. Married, 1 Stepdaugher19 2 Boys 16 & 12.DX With MS 4-8-04, 2 Months after Tonsil Surgery. Jst went to MS Doc. few day's ago & found out Betaseron may not be working I have developed Antibodies this means this could be working against the shot. Had Bloodwork done waiting on results. Doc. mentioned Tysabri & I just don't know about that because of things when it first come out, it was under a diffrent name at the time but there was 3 deaths over it. But Doc said there is no ther opitions. Was on Avonex at first no good then Copaxone no good now Beta.Very confused & fed up.