I think they have been working on the theory of Problem, Reaction, Solution. Problem = spread a new virus that causes some deaths, with many more falling ill etc (just enough to scare people. The hoped for Reaction = people screaming for a vaccine....then they offer up the Solution = Tamiflu or a new one. But it does not look like they accomplished their mission this time around. They have become way too obvious, and people are catching on. They have underestimated the human mind
IMHO the real danger may be still awaiting us, there is always a back-up plan, so we humans need to stay on our toes