Caused by a viral strain, Twin Fever is characterized by its telltale symptom, Twin Sight, more commonly known as Diplopia or double vision. During the early stages of infection, victims will be plagued by double vision which fades when they are near death.
- "Planet Twin Tabula
Mass: 4.1 trillion teratons.
Profile: Planet is best known for "Twin Fever," a disease caused by a viral strain native to Twin Tabula. In the early stages of the disease, victims suffer from double vision. When the "twin sight" fades, the victim is near death." —Scan Data (Metroid Prime)