Alien Retrograde Infectious Amnesia
by Geoff Nelder
A virus inducing infectious retrograde amnesia.The effect of ARIA is apocalyptic in that the infected lose their memory backwards at the rate of a year’s worth per week.
A virus that gestated in wolves two thousand years ago. The first to be infected was Genghis Khan. It causes the symptoms usually associated with vampirism, photosensitivity and invincibility. The entire nation of Russia is infected, except for a few feral children. The virus can cause extreme mutation.
The Infernal Devices
Demon pox, also known as astriola, is a rare but debilitating disease that affects Shadowhunters and is caused by sexual contact with demons.
Mundanes are immune to the disease, as demon pox is assumed to be caused by the interaction of demon poisons with the angelic nature of Shadowhunters.
Speaker for the Dead
by Orson Scott Card
A quasi-conscious self-modifying organism capable of infecting any form of life. “Descolada” is also the Portuguese word for “unglued”. In the context of the book, this refers to the Descolada virus’s effects: it breaks the link of the DNA double helix (ungluing it) and induces mutations.
The Harry Potter Series
by J.K. Rowling
Dragon pox is a potentially fatal contagious disease that occurs in wizards and witches. Its symptoms are presumably similar to Muggle illnesses like smallpox and chicken pox. However, in addition to leaving the victim’s skin pockmarked, dragon pox causes a lasting greenish tinge. Simpler cases present with a green-and-purple rash between the toes and sparks coming out of the nostrils when the patient sneezes. Elderly patients are apparently more susceptible to dragon pox than younger ones. Gunhilda of Gorsemoor developed a cure for dragon pox, but the disease has not been completely eradicated, as is evidenced by the fact that it is still treated by the Magical Bugs ward at St. Mungo’s Hospital.