Europe fast-tracking swine flu vaccine

In a drive to inoculate people against swine flu before winter, many European governments say they will fast-track the testing of a new flu vaccine, arousing concern among some experts about safety issues and proper vaccine doses.

The European Medicines Agency, the EU's top drug regulatory body, is accelerating the approval process for swine flu vaccine, and countries such as Britain, Greece, France and Sweden say they'll start using the vaccine after it's greenlighted - possibly within weeks.

In an interview with The Associated Press, Dr. Keiji Fukuda, the World Health Organization's flu chief, warned about the potential dangers of untested vaccines, although he stopped short of criticizing Europe's approach outright.

"One of the things which cannot be compromised is the safety of vaccines," he said Friday. "There are certain areas where you can make economies, perhaps, but certain areas where you simply do not try to make any economies."

Flu vaccines have been used for 40 years, and many experts say extensive testing is unnecessary, since the swine flu vaccine will simply contain a new ingredient: the swine flu virus.