No. Once an infection form taps your spinal cord, you are gone. Sarg. Johnson was immune due to his 'Boren's Syndrome' (radiation scrambling his nervous system), but that's unique.

Yes. The Flood is the corrupted dust of the ancient Precursors, seeking revenge on their rebellious children (Forerunners and Humans).

How fast does it spread?

Exponentially. A single ship crash-landing on a planet means the planet is lost within 48 hours.

Flood Infection Rate

Time until planetary glassing.

📜 The Origins

The Flood consumes all biomass. Once an outbreak starts, it's a race against time before the entire planet must be sterilized.

🚀 Master the Tool

Input local population density and defense readiness. We'll tell you how long you have to evacuate.

HALO

Infection Parameters

Local Biomass (Billions)

Local Defense Rating

Time Until Glassing Required

5.71 Hrs

From the HALO Lore

Combat Operations Active

Gravemind Detect

“I am a monument to all your sins.” - One spore can destroy an entire species.

The Logic Plague

The Flood is not a virus; it is a macroscopic super-organism. It doesn't just kill you; it uses your biomass to build combat forms and your memories to learn how to drive your ships.

Stages of Infection

Feral Stage: Infection forms (Popcorn) hunt hosts. No coordination.
Coordinated Stage: A Proto-Gravemind forms. The Flood begins to use strategy and weapons.
Interstellar Stage: A full Gravemind forms. It gains the knowledge of all consumed hosts (including Forerunners). It can warp reality and convince AIs (logic plague) to defect.

Why HALO?

The Forerunners realized they couldn't beat the Flood militarily. The parasite was too fast. So they built the Halo Array. It doesn't kill the Flood. It kills their food. (i.e., All sentient life in the galaxy).