The results are the first from a major randomized clinical trial toindicate that treating an HIV-infected individual can reduce therisk of sexual transmission of HIV to an uninfected partner.
For an industry that's been struggling to fend off increasing competition from the growing wine and spirits businesses, the results indicate "an increased risk that new pricing will stick in February, " Swartzberg said.
But it will be at least a couple of years before enough safety data is collected in order to deem Tysabri effective enough to validate the risks of PML. Recent clinical studies of more than 3, 000 patients indicatetherisk of contracting PML is roughly 1 in 1000, given the three confirmed cases.