Just Relax, there is nothing to fear.
Have you never asked yourself what a "virus" really? What it really does?
Have you ever seen the proof of an isolated "virus" that causes disease?
There was an interesting interview with Dr. Stefan Lanka in a german newspaper in 2005 about bird flu, h5n1, vaccinations and aids.
After a bit of googling i found an english translation of this article.
Interview with Stefan Lanka 27.10.2005
I belive this is nothing more than another attempt to keep people in a state of fear und uncertainty.
Maybe this three year old tamiflu is expiring and they need to get rid of it.