Alpha Virus

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Alpha Virus
  • Alpha Virus.png
Stack digit 1.png
Damage248 Rogue
Knockback1 (Extremely Weak)
Critical chance4%
Use time31 Very Slow
Velocity8 effective
TooltipThrows a giant plague cell with a lethal aura that explodes into 6 homing plague seekers
Stealth strikes cause the plague cell to move slower, accumulating an aura of swirling plague seekers as it flies
Inflicts DebuffPlaguePlague
100% chance

Debuff duration2 seconds (Plague Cell)
3 seconds (Alpha Seeker)
Debuff tooltipRotting from the inside
RarityRarity Level: 11
Sell 24 Gold Coin.png
Research1 required
Projectiles created
Alpha Virus Aura
Virus Aura
Alpha Seeker
Alpha Virus thrown at a group of dummies. Notice how the aura can damage enemies through blocks but not the cell nor the seekers.

The Alpha Virus is a craftable post-Moon Lord rogue weapon that is a direct upgrade to the Epidemic Shredder. When used, it fires a large plague cell that constantly emits a lethal aura, which deals damage to enemies that enter its radius, and this aura hits up to 3 enemies at a time. The cell constantly emits and gains particles as it travels. When the plague cell travels a moderate distance, hits enemies 3 times or collides with a tile, it splits into 6 non-piercing plague seekers that home on nearby enemies. The cell and seekers inflict the Plague debuff.

Performing a stealth strike with the Alpha Virus will cause the next plague cell thrown to move slower, deal 70% damage and spawn 6 plague seekers to accumulate around it as it flies.

Its best modifier is Flawless.



Crafting Station
Ancient ManipulatorAncient Manipulator
Epidemic ShredderEpidemic Shredder1
Luminite BarLuminite Bar5
Alpha VirusAlpha Virus1



These history sections are still a work-in-progress, and may not yet contain changes relevant to the current version of the Calamity Mod.
    • Stealth strikes now have a 70% damage modifier.
    • Stealth strike plague seekers can no longer proc projectile effects from rogue accessories.
    • Nerfed damage from 333 to 248.
    • Now uses Luminite Bars in its recipe instead of Uelibloom Bars.
    • Now uses the Rarity Level: 11 rarity instead of Rarity Level: 12.
  • No longer uses 5 Bloodstone Cores in its recipe.
  • Fixed a grammatical error in the tooltip.
    • Nerfed damage from 400 to 333.
    • Projectile now updates twice as fast and now homes in onto enemies faster.
    • Fixed it having an incorrect sell price.