yomama427:i know that already. so it takes out hte local infection GREAT! But the flood are still out there, i dont believe that all the flood in the galaxy were located there. and even if they were what about the other halos they still have flood on them
didnt cortana or whoever it was say that gravemind was trying to control this halo so he was close to it and it prob killed him which stopped the prodution of the flood, am i right or am i wrong cause im not sure.

"Noobs use bombs, Real men kill"
-Zaid Is 4eva 1010