The Andromena Strain Question? (Spoiler)?

Ok. I just finished watching The Andromena Strain on A and E and Im confused on something. During the Movie, the Wildfire team finds the code and a picture of 2 triangles and they are confused by it. At the end, on the ISS, a man is using that code to open a little hatch and the picture of the triangles was on the vile of Andromena. My questions are, Did we unleash the virus on ourselves like in Shanghai menchoned in the movie? Why did we keep the Andromena samples? Whats in all of those doors in the ISS, more epidemics like that one? Are we the "aliens" attacking the world? Who was the man in the end eating the gum? Why did that soldier murder the Colonel and General of Biological Defense? And last, can there be another movie? Thanks