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Flawed Contagious Spread
Warframe · Mod

Flawed Contagious Spread

Flawed shotgun Toxin mod

Released Jul 18, 2014

Flawed Contagious Spread adds Toxin to shotgun damage, up to +40% at rank 3. Consider it as a limited Toxin option for a shotgun before using its standard variant; it cannot be equipped alongside that variant.

TypeShotgunPolaritynaramonMax rank3Base drain4VariantFlawedRarityUncommon
Flawed Contagious Spread GUIDE

Understand Flawed Contagious Spread

Useful when…

  • Shotgun setups needing a Toxin damage component with the flawed mod available.
  • Lower-rank investment where the flawed version's smaller bonus and drain are useful.

Effect and restrictions

The mod adds Toxin damage to shotguns, scaling from +10% at rank 0 to +40% at rank 3. It is a flawed standard-slot shotgun mod with Naramon polarity and base drain 4. Its explicitly incompatible name is Contagious Spread, so the flawed and standard versions cannot be equipped together.

wiki.warframe.com ↗

Using it

Use it when adding Toxin to a shotgun is useful and the flawed version's smaller bonus fits your current setup. It supplies an elemental damage bonus; it does not add fire rate or revive speed. Accelerated Blast and Amalgam Shotgun Barrage provide those distinct listed effects, so they are not direct replacements for Toxin damage.

Rank cost and standard variant

The flawed mod has three ranks, reaching +40% Toxin. Its final rank costs 80 Endo and 3,864 Credits. Standard Contagious Spread reaches +90% Toxin at rank 5, with base drain 6, and is explicitly incompatible with the flawed version. Consider replacing the flawed mod when the standard variant's larger bonus is worth its higher drain and investment.

wiki.warframe.com ↗

Common misread

Do not plan a shotgun loadout around equipping both variants: the incompatibility is explicit. The +40% value is the flawed mod's maximum at rank 3, not the standard variant's maximum.

Limitations and tradeoffs

  • The flawed variant tops out at +40% Toxin, below the standard variant's +90%.
  • It cannot be equipped with Contagious Spread.

Common mistakes to avoid

  • Equipping or planning to equip it alongside Contagious Spread.
  • Confusing the flawed mod's +40% maximum with the standard variant's +90%.

Effects and reference details

Rank effects and investment

RankListed effectsUnpolarized drainTotal Endo from rank 0Total Credits from rank 0
0+10% Toxin400
1+20% Toxin520966
2+30% Toxin6602,898
3+40% Toxin71406,762

These are listed mod effects and fusion costs, not final build damage. Matching and mismatched polarities change capacity. Totals assume starting at rank 0.

References and version

Game data version: Pinned public export

Flawed Contagious Spread — WARFRAME Wiki ↗wiki.warframe.com ↗
Technical source data for verification

These machine-readable game records support the calculations and factual checks. The wiki references above are intended for reading.

Warframe Public Export ↗Raw game data (JSON) ↗wiki.warframe.com ↗

Original data record ↗

Optional: calculate an upgrade or configurationOpen the calculator when you want a cost estimate or a compatibility check.
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Fusion cost and capacity

0Endo
0Credits
4Target slot drain
RankObserved effectDrainEndo from 0Credits from 0
0+10% Toxin400
1+20% Toxin520966
2+30% Toxin6602,898
3+40% Toxin71406,762

Slot polarity changes drain; fusion prices depend on mod rarity and family.

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