Researchers Race to Boost Supply of Bird Flu Vaccine
Additives Studied as Way to Help Fight Potential Pandemic, By David Brown

Medical researchers bracing for a global influenza epidemic are in frantic search of a way to perform a loaves-and-fishes miracle with the world's skimpy annual production of flu vaccine.

That production -- about 300 million flu shots a year -- cannot be increased quickly or easily, no matter how dire the circumstances. If the supply is going to protect more than a tiny fraction of the world's 6.5 billion people, some way has to be found to stretch it.