There's no need whatsoever to remake/'update' this film (esp. to compensate for HW studios' pathetic dearth of ideas, greed, and arrogance toward its consumers/ audience/s and Independent filmmakers!). Its subject is absolutely contemporary as it is, what with the looming alleged flu 'pandemic', aside from being an exceptionally well done film. Superbly directed on location by a great, always socially conscious and prescient director, who was, as usual, decades ahead of his time!
There was nothing prophetic about this film. In fact, it was right out of mediaeval Europe. Now, if it had been about the hunt for terrorists or criminal blackmailers with a pandemic-threatening culture, then you may have had a point.