Ok soldier zombies Possibility?, page 1

It would be extremely difficult for anyone to create a virus that would be able to disable normal biological functions and effectively create an "Undead Zombie". There are a few factors to consider about the subject:

First, we are talking about U.S. Foreign policy here and there role in the development of such a virus. The U.S. Biological Weapons program was ended in 1969 by Richard Nixon, and put a halt to all research done in this field. Throughout the 1960's the U.S. was actively involved in the Biological Weapons program primarily being researched in Ft. Detrick where simulated viruses and bacterial agents sort of proved that a weapon of sorts could be used effectively. However, it was later abandoned when the government figured out that the research was dangerous and that it may be quite easy for it to fall into enemy hands. Thus, the U.S. Biological Weapons programed ended, and any further research down this path would be considered a violation of a very direct treaty that was signed by the U.S.

Secondly, creating a new virus or a mutation of a known virus would be nearly impossible due to the vast numbers of genetic material that would need to be assembled to do so. A virus is a very simple creature, but the DNA or RNA enclosed in its capsid is highly evolved and uniquely structured. Not only would the entire genetic code of a known virus have to be known, but one would have to formulate the entire code of a new virus to carry out specific functions in the human body. There are specific triggers that are known to shut down specific parts of a human cells lifecycle, such as blocking the cells protein synthesis or prohibiting the mitochondria from developing energy. In spite of this, one would have to effectively carry out determining what the viruses function would be upon entering the host, and how it would disseminate its functions throughout the body. The virus would not only have to interact with Immune cells and Lymphatic cells as all known viruses do, but it would have to interact with the cells of the nervous system (neurons), and all these listed here: Cell Types in order to completely subdue the host. With the limited technology currently avaliable to do such a thing it is highly doubtful that this would ever occur.

Finally, to carry out such an operation it would take the cooperation of thousands and thousands of Scientists and Physicians. Not only that, but they would have to keep completely quiet about what they were doing, which given the large number of people it would take to create such a virus is highly doubtful they would be able to pull it off in complete secrecy. Also, as I have explained in various posts throughout ATS, a virus itself is not a living organism and really does not fall within our definitions of something that can be easily manipulated at will. We currently have no cures to viruses, and if we cannot even cure what we may eventually have the potential to create (as you say) we would effectively be creating our own destruction.