I read the 50000, but then they went on to point out that 10,000 die each year of normal flu (which seems a lot more than I would have expected... did I misread?), but it makes the whole 50000 seem smaller somehow...
At the end of the day (as far as I know), there is sod all we can do personally about it (unless you have a job stockpiling the vaccine stuff), so worrying isn't going to do anyone any good.
Keep healthy, and hope for the best.
Maybe I just don't worry enough....