Halo Infinite: How the Flood may return

[Windows Central]

The chances a Flood outbreak could occur on Zeta Halo are uncomfortably high.
The Flood, which was once one of the two main antagonists of the Halo series as a whole, have not had much of a presence in the franchise since their defeat at the end of 2007's Halo 3. They briefly threatened to return in full during the events of Halo Wars 2's Awakening the Nightmare DLC, but Banished forces managed to stop the outbreak before it got out of control. Since then, many have wondered when — or if — the Flood will appear once again.
Warning: Spoilers for Halo Infinite's campaign follow, so proceed with caution!

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