Virus (Biome)

"An infection started somewhere!"
The Virus can start spreading after Plantera has been defeated.

The Infection has a 15% (3/20) chance to occour every night.

When entering the biome, Eerie music starts to play.

Blocks in the biome have 3 stages:
 * 1st stage (The dark green one)

The 1st stage turns into the next stage, and then turns a random nearby block into the virus biome's 1st stage block. Last stage blocks inflict Virus Spread debuff, and if mined, drop Virus Atoms.
 * 2nd Stage (The most common one)
 * Last Stage (The brightest one)

The only enemies that spawn in the biome are Virus Slimes.