Strain Infection is a set mod that increases the critical multiplier of a melee weapon based on the number of grown Cysts.

When equipped with other Strain set mods, the Helminth will grow up to 2/4/6/8 Cysts over 24s, which then erupt, spawning Maggots that seek out and attack enemies.


Rank Critical multiplier Cost
0 +5% 6
1 +10% 7
2 +15% 8
3 +20% 9


  • The amount of critical multiplier provided by Strain Infection is indicated by a “Viral b” Icon in the Buff Tracker.
  • Provides the user with 160% critical multiplier, provided all set mods are equipped and the Helminth Charger has 8 cysts active.
    • This state only lasts for one second, then the process starts over from 0%.
  • Critical multiplier bonus stacks additively with other Critical multiplier mods such as Mod TT 20pxOrgan Shatter. A max rank Strain Infection and Organ Shatter will provide the user with +250% Critical Damage provided all set mods are equipped and all cysts are active on the Helminth Charger.  

Patch HistoryEdit

Update 25.1
  • Fixed Strain Mod Maggots Energy color persisting as default.

Hotfix 25.0.8

  • Fixed Maggots from Strain Mods not using the proper emissive colors.

Update 24.2

  • Introduced.

Last updated: Hotfix 24.2.2

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