Will government experimentation cause an Avian Flu Epidemic?

A Bird Flu Vaccine trial currently underway in three U.S. cities has the potential to develop into a focus of spreading the disease. Jonathan Campbell reports.

http://www.cqs.com/epidemic.htm

Dr. Len Horowitz has recently expounded on the origins of epidemics and their causes, in a wide-ranging article - Avian Flu Fright: Politically Timed for Global "Iatrogenocide" - a copy of which I have placed on my website at http://www.cqs.com/horowitz.htm since I cannot yet find it published anywhere else. (In the article, Dr. Horowitz specifically gives permission for anyone to do so to get the word out.)

While I do not subscribe to everything Dr. Horowitz says in the article, he has some profound observations about epidemics and their connection to vaccines. And he reminds us: vaccines are based on existing virus cultures, since they use "attenuated" or "inactivated" copies of the viruses to supposedly invoke the human immune system to create antibodies.

Now add to this information: a small percentage of people who are treated with vaccines actually get the full-blown illness. This still happens with all the vaccines for childhood illness, even with polio vaccine. Since Avian Influenza supposedly kills more than 50% of its victims, and since there is no natural immunity in the rest of the population, this is an extremely serious matter. How would they prevent those unfortunate enough to get the full-blown illness from spreading it to the mostly-unprotected population?

After reading Dr. Horowitz's article, I remembered that there have been recent press releases about experimental vaccines that are being prepared - right now - for Avian Influenza, and federal authorities are concerned that not enough will be available if there is an outbreak or epidemic. But something doesn't make sense: other articles have stated that the Avian Flu hasn't mutated yet to be able to spread from human to human easily. So how are they creating a vaccine for a virus that doesn't exist yet? And how are they testing such a vaccine, for a virus that supposedly kills more than 50% of its victims?

Interesting to focus on bird flu, SARS, and aids rather than more virulent and lethal threats such as plague, smallpox, ebola, marburg etc.