The Virus

The Virus is a passive item.

Effects

 * Inflicts poison on enemies who make contact with Isaac.
 * The poison deals 2 damage per tick (3 damage per second) and lasts for 2-3 ticks.
 * The poison deals Isaac's damage per tick (1.5x Isaac's damage per second) and lasts for 2-3 ticks.
 * The poison deals Isaac's damage per tick (1.5x Isaac's damage per second) and lasts for 6 ticks for normal enemies and 3 ticks for bosses.
 * The poison lasts for 6-7 ticks and deals damage equal to (0.2*HeartContainers^2) + 2, where HeartContainers is the total number of heart containers and bone hearts Isaac has.
 * The poison can be continuously applied to bosses, which normally are immune to status effects for a brief time after being inflicted with one.
 * Lets Isaac deal 24 contact damage per tick on top of applying poison (48 damage per second).
 * Enemies who are killed after they have been inflicted with this type of poison have a 20% chance to drop Black Hearts.
 * -0.1 speed down.
 * This is not applied until the next time Isaac's speed stat is updated.
 * +0.2 speed up.

Synergies

 * Invulnerability: Contact while invincible poisons enemies.

Interactions

 * : The speed down from the Virus does not stack with the Odd Mushroom; if both are collected, only a total of -0.1 applies.

Trivia

 * Upon picking up The Virus, Isaac looks very similar to Lust, which is fitting since Lust also drops The Virus.
 * As such, The Virus may be a reference to an STI.

Seeds
26ND Z11A (Treasure Room adjacent to spawn) 1389 DNH1 (Treasure Room adjacent to spawn) FKVG 36FZ (Lust fight right of spawn) A643 V2FE (Treasure Room adjacent to spawn) 913D J63B (First floor Treasure Room) TKYD 8DRA (Treasure Room adjacent to spawn) FEKK E8JS (First Golden Treasure Room)