Installation 05 Flood?

When the firing sequence was halted by the Arbiter and co, and master chief boarded the dreadnought, weren’t there still flood present on the ring then? and also it says on halopedia that around 2557 they set up a research station there, how would that be possible considering that the flood and sentinels that may lurk there?

> When the firing sequence was halted by the Arbiter and co, and master chief boarded the dreadnought, weren’t there still flood present on the ring then? and also it says on halopedia that around 2557 they set up a research station there, how would that be possible considering that the flood and sentinels that may lurk there?

The Elites sterilized Installation 05 by glassing the surface.

> > When the firing sequence was halted by the Arbiter and co, and master chief boarded the dreadnought, weren’t there still flood present on the ring then? and also it says on halopedia that around 2557 they set up a research station there, how would that be possible considering that the flood and sentinels that may lurk there?
>
> The Elites sterilized Installation 05 by glassing the surface.

That sucks , could have been a possible way to bring them back again was it mentioned in a book?

In halo 3 when the elites come out of the drop pods to fight the flood they will talk to the Arbiter about glassing installation 05 and chasing the ship that broke through the quarantine line around installation 05.