Relenza is still alive !
Here the 2nd quarter sales of GSK
Relenza sales 33 mill.GBP = 51.6 m US-Dollar = approx 3,6 m US-Dollar royalties for Biota.
(see GSK http://www.gsk.com/media/712063/q2-2015-results-announcement.pdf
page 5 and 18
Best wishes from Germany