From the San Francisco Chronicle:
Flu shots fly in from Canada
When San Francisco internist Dr. Philip O'Keefe could find no flu shots for his elderly and immune-compromised patients, he did what the federal government is now trying to do: He turned to Canada.

Soon enough, a Winnipeg pharmacy that sells all kinds of prescription medicines to Americans over the Internet -- in violation of U.S. law -- was willing to ship him 400 doses of French-made flu vaccine for about $10.50 each.

On Thursday night, in the same sort of plastic foam container used to fly fresh fish across the country, 40 vials of vaccine nestled in ice packs were winging their way to San Francisco.