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Contagion

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ContagionSpell, AoE, Duration, Chaos
Radius: 20
Mana Cost: (5-20)
Cast Time: 0.60 sec
Requires Level 4Unleashes a vile contagion on enemies, dealing chaos damage over time. If an enemy dies while affected by Contagion, it spreads to other enemies.Per 1% Quality:
0.5% increased Area of Effect
Deals (3.5-235.9) Base Chaos Damage per second
Base duration is 5 seconds
Modifiers to Spell Damage apply to this Skill's Damage Over Time effect
Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
Contagion skill icon.pngContagion inventory icon.png
Acquisition
Level: 5
Purchase Costs
Normal1x Scroll of Wisdom
Sell Price
1x Scroll Fragment
Miscellaneous
Item class: Active Skill Gems
Metadata ID: Metadata/Items/Gems/SkillGemContagion

Contagion skill screenshot.jpg

Contagion is a spell that deals chaos damage to all enemies in the area, and spreads when an enemy dies. Neither the duration of Contagion nor associated degeneration effects (Essence DrainEssence DrainSpell, Projectile, Duration, Chaos, AoE
Mana Cost: (8-23)
Cast Time: 0.70 sec
Critical Strike Chance: 5.00%
Effectiveness of Added Damage: 60%
Requires Level 12Fires a projectile that applies a damage over time debuff when it hits. You are healed for a portion of the debuff damage. The debuff is spread by Contagion.Per 1% Quality:
1% increased Chaos Damage
Deals (31.2-1503.2) Base Chaos Damage per second
Regenerate 0.5% of Debuff Damage as Life
Base duration is 3.8 seconds
Deals (9-433) to (14-649) Chaos Damage
Modifiers to Spell Damage apply to this Skill's Damage Over Time effect
Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
Essence Drain skill icon.png
) are reset when spread to allies on death.

Skill functions and interactions

  • Damage over time: Modifiers to spell, chaos damage, and damage over time affect the damage over time component of this spell.
  • Area of effect: modifiers to AoE radius (such as #% increased Radius of Area Skills from Increased Area of Effect SupportIncreased Area of Effect SupportSupport, AoE
    Icon: E
    Mana Multiplier: 140%
    Requires Level 38Supports any skill with an area of effect.Per 1% Quality:
    Supported Skills deal 0.5% increased Area Damage
    Supported Skills have (30-49)% increased Area of EffectThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    ) affect both skill radius and spread radius of Contagion and Essence Drain effects.[1] Area damage (from e.g. Concentrated Effect SupportConcentrated Effect SupportSupport, AoE
    Icon: o
    Mana Multiplier: 140%
    Requires Level 18Supports any skill with an area of effect, regardless of whether that skill deals damage.Per 1% Quality:
    Supported Skills deal 0.5% increased Area Damage
    Supported Skills have 30% less Area of Effect
    Supported Skills deal (35-54)% more Area Damage
    This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    ) does not apply.[2]
  • Contagion does not hit, and therefore cannot confer the effects of supports such as Blind SupportBlind SupportSupport
    Icon: x
    Requires Level 8Supports any skill that hits enemies.Per 1% Quality:
    Supported Skills have 1% increased Blinding duration
    Supported Skills have 10% chance to Blind enemies on hit
    Supported Skills have (0-38)% increased Blinding duration
    This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    or Curse On Hit SupportCurse On Hit SupportCurse, Trigger, Support
    Icon: &
    Requires Level 38Must support both a skill that hits enemies, and a curse skill to work. The curse will be applied when enemies are hit by the other skill. Cannot support totems, traps, or mines. Minions cannot apply curses this way.Per 1% Quality:
    0.5% increased Effect of Supported Curses
    Supported Skills apply supported Curses on Hit
    Supported Skills have (50-12)% reduced Curse Duration
    You cannot Cast Supported Curses
    This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    .
  • Can be used in left mouse button slot to cast and move.

Gem level progression

LevelLvl.dexterityintelligenceMana
Cost
Chaos
Damage
per sec
Exp.Total Exp.
140053.500
260064.3841841
3901765.73,0993,940
412142177.47,43311,373
5161826810.222,89534,268
6202231913.649,72583,993
7242537101895,714179,707
82829421123.3169,595349,302
93233471129.9283,759633,061
103636521238.1453,9961,087,057
114040581348.1703,1281,790,185
124444631460.31,061,2232,851,408
134848681575.22,065,8704,917,278
145251741693.32,507,1107,424,388
1555547816109.52,573,7319,998,119
1658578217128.17,611,35117,609,470
1761608618149.613,437,90831,047,378
1864629018174.425,052,14756,099,525
196765941920343,869,43699,968,961
2070689820235.9242,081,178342,050,139
21727010020260.5N/AN/A
2274N/AN/A21287.5N/AN/A
2376N/AN/A21317.2N/AN/A
2478N/AN/A21349.7N/AN/A
2580N/AN/A22385.4N/AN/A
2682N/AN/A22424.5N/AN/A
2784N/AN/A23467.3N/AN/A
2886N/AN/A23514.3N/AN/A
2988N/AN/A24565.7N/AN/A
3090N/AN/A24621.9N/AN/A
3191N/AN/A24652N/AN/A
3292N/AN/A25683.5N/AN/A
3393N/AN/A25716.5N/AN/A
3494N/AN/A25750.9N/AN/A
3595N/AN/A25787N/AN/A
3696N/AN/A25824.7N/AN/A
3797N/AN/A26864.1N/AN/A
3898N/AN/A26905.4N/AN/A
3999N/AN/A26948.5N/AN/A
40100N/AN/A26993.6N/AN/A

Item acquisition
Questionmark.png

Upgrade paths

This item can be acquired through the following upgrade paths or vendor recipes:

AmountIngredientGeneral
Notes
Type
13The CataclysmThe Cataclysm13Level 21 Spell Gem
Corrupted
The mighty warriors traded in blows, the nimble archers in arrows, yet it was the brazen thaumaturgists who would bring catastrophe to all.
random corrupted level 21 Spell gemAutomatic
3Gemcutter's PromiseGemcutter's Promise3Superior Gem
Quality: +20%
"I swore to use my position to help the people. What good is power when it just accumulates on the already-powerful?" - Erasmus, Imperial Gemcutter
random superior gem (Q20)Automatic
6The FoxThe Fox6Level 20 Gem"Masters of wit, strength and cunning. To survive the harsh winters, you must be like the fox."
- Ezomyte Proverb
random level 20 gemAutomatic

Quest reward

This item is given as quest reward for the following quests:

Class →WitchShadowRangerDuelistMarauderTemplarScion
Quest ↓
Breaking Some Eggs
Act 1

Vendor reward

This item can be bought at the listed npc vendors after completing the following quests:

Class →WitchShadowRangerDuelistMarauderTemplarScion
Quest ↓
Breaking Some Eggs
Act 1
Nessa
A Fixture of Fate
Act 3
Siosa
Fallen from Grace
Act 6
Lilly Roth

Related helmet enchantments

The following helmet enchantments affect Contagion.

NameFor generated item/monster modifiers the minimum item/monster level respectively. Some generation types may not require this condition to be met, however item level restrictions may be raised to 80% of this value.StatsSpawn Weighting
Enchantment Contagion Damage 16625% increased Contagion Damagehelmet 100
default 0
Enchantment Contagion Damage 27540% increased Contagion Damagehelmet 100
default 0
Enchantment Contagion Duration 16620% increased Contagion Durationhelmet 100
default 0
Enchantment Contagion Duration 27530% increased Contagion Durationhelmet 100
default 0
Enchantment Contagion Radius 1668% increased Contagion Area of Effecthelmet 100
default 0
Enchantment Contagion Radius 27512% increased Contagion Area of Effecthelmet 100
default 0

Microtransactions

The list below shows microtransactions for Contagion.

ItemEffect(s)
Arcane Contagion EffectArcane Contagion EffectContagion Skin
Stack Size: 20
Your Contagion becomes a blue arcane effect.
Your Contagion becomes a blue arcane effect.

Version history

Version Changes
3.8.0
  • No longer gains additional radius as the gem levels (previously gained +4 radius by gem level 20).
3.6.0
  • Mana Cost at gem level 1 is now 5 (was 11).
  • Mana Cost at gem level 20 is now 20 (was 28).
  • Can now affect up to 40 targets per cast (from 20).
2.6.0
  • Contagion's radius has increased from 18 to 20 units.
2.2.1d
  • Fixed an instance crash with Contagion.
2.1.1c
  • Fixed an instance crash with [...] Contagion.
2.1.1b
  • Fixed a bug where Contagion could be cast and spread through walls.
2.1.1
  • Contagion can now be supported by Iron Will.
2.1.0
  • Added to the game.

References

  1. Mark_GGG (August 1, 2016). "Mechanical Questions Thread". Official Path of Exile Forums. Retrieved August 1, 2016.
  2. Rory (May 3, 2017). "Damage Over Time Changes - Part 2". Official Path of Exile Forums. Retrieved August 7, 2017.