>According to the story in the Star; while the expiry date says 5 years, it actually retains it's usefulness for 7 years. Up here they are starting to change the composition a bit. They're rejigging the vaccine to use less Tamiflu and more Relenza because of the virus' apparent ability to become Tamiflu resistant.

Most likely, the package I was given by the pharmacy back then had been in stock for a couple of years since the expiration date was 2 years from when I received it.