Locked up in the bowels of the medical faculty building here and accessible to only a handful of scientists lies a man-made flu virus that could change world history if it were ever set free.
The virus is an H5N1 avian influenza strain that has been genetically altered and is now easily transmissible between ferrets, the animals that most closely mimic the human response to flu. Scientists believe it's likely that the pathogen, if it emerged in nature or were released, would trigger an influenza pandemic, quite possibly with many millions of deaths.
In a 17th floor office in the same building, virologist Ron Fouchier of Erasmus Medical Center calmly explains why his team created what he says is "probably one of the most dangerous viruses you can make"—and why he wants to publish a paper describing how they did it.
Taken from Sciencemag where the full article resides.
One scientist was quoted in the article saying:
"I can't think of another pathogenic organism that is as scary as this one," adds Keim, who has worked on anthrax for many years. "I don't think anthrax is scary at all compared to this."
Unlike the media faff surrounding Cern's non life threatening experiments with the LHC, this thing actually has some pretty severe risks if the papers find their way into the wrong hands no?
Science is absolutely brilliant but some things like this maybe should not be made public, or if it is then how it was done should not be!
Fouchier initially tried to make the virus more transmissible by making specific changes to its genome, using a process called reverse genetics; when that failed, he passed the virus from one ferret to another multiple times, a low-tech and time-honored method of making a pathogen adapt to a new host.

12 Monkeys, anyone?
