The term that keeps being used then denied or glossed over is “pneumonic plague” which, if it is accurate, indicates a problem a bit more serious than any Flu virus mutation.
There has been extensive testing in Ukraine. It appears to be H1N1.
Plague is treatable with antibiotics. This ‘plague’ has been called a virus. Viruses are unaffected by antibiotics.
The following link provides a good overview of this issue.
http://drkatesview.wordpress.com/2009/11/05/baxter-intl-and-ukraine-pneumonic-plague/