Item #: SCP-306
Object Class: Keter
Laconic Containment Procedures: Some frozen specimens of SCP-306 are kept at Site-101. People infected with SCP-306 must be placed in quarantine.
Laconic Description: SCP-306 is a species of mushrooms thats spores cause people to transform into frogs that spread the infection further.
Additional Context: Originally, SCP-306 was called "Frog Rot" and was an article written by Dr Gears. However, it was later rewritten by Waterfire in 2013.
The original SCP-306 was a virus. If a person is infected with SCP-306, warts will appear on the person's skin. After a period of time, the warts will begin to fall from the skin, and the skin itself will begin to transform into a mass of warts, even transforming the bones and organs, leading to death.
You can still read the original document here