My Virus X is a re-creation of the Kryptonian plague for which there is no cure! It can even kill Superman here on Earth, despite his super-powers. 
Action Comics #363 is an issue of the series Action Comics (Volume 1) with a cover date of May, 1968.
Synopsis for Superman: "The Leper from Krypton"
In prison, Lex Luthor gains access to the biochem lab, and developes Virus X, a plague germ that has been irradiated with Kryptonite. It kills Earth beings in minutes, and is even capable of killing Superman.
Lex secretly passes a vial of Virus X to the criminal ventriloquist Ventor who had captured and hypnotized Clark Kent.[1] Ventor returns to his hideout and orders Kent to infect Superman. The mesmerized Clark doesn't remember that he is Superman, but does remember enough to climb into his apartment and pour the virus on the pillow -- carelessly -- and Clark splashes Virus X on his exposed skin.
The infection causes Superman to snap out of the hypnosis as plague symptoms develope. He tears off Clark Kent's suit and glasses, and Superman recalls the tragic history of Virus X on Krypton -- it had no cure, and no one who was infected expected to survive.
Luthor announces to the world that Superman is infected with Virus X -- he is the "Leper from Krypton". Superman proves to be highly contagious and people begin to fear the Man of Steel. An alley cat brushes against him, and instantly shrivels into a wrinkled mass of Virus X. Those in need refuse his help; and he is told to leave town. Clark visits the Daily Planet to leave a note and go, but Lois Lane catches him in the act. Would she catch Virus X as well?
Appearing in Superman: "The Leper from Krypton"
Featured Characters:
Supporting Characters:
Antagonists:
- Lex Luthor
- Ventor (Final appearance)
- Bruno Caine (Ventriloquist Dummy)
Other Characters:
- Lana Lang
- Metropolis Fire Department
- Ugerian Leper (Flashback only)
- Kryptonians (Flashback only)
- NASA (Mentioned only)
Locations:
- Metropolis
- Metropolis Prison
- Biochemical Lab
- Clark Kent's Apartment
- Luna City
- Superman Museum
- Metropolis Prison
- Krypton (Flashback only)
- Stuvar (airport) (Flashback only)
- Pestilence Valley (Flashback only)
- Planet Uger (The Plague Planet) (Mentioned only)
Items:
- Electric Thought Projector
- Green Kryptonite
- Hypnotron (Flashback only)
- Superman Robot (Mentioned only)
- Virus X
Vehicles:
Synopsis for Supergirl: "The Landmark Looters"
Giant tweezers from a hole in space reach down and snatch Alcatraz Prison, the Sphinx, the Eiffel Tower, the Stanhope Observatory, the Taj Mahal, and the Statue of Liberty in that order. When Supergirl investigates, she discovers the culprits are two gigantic alien children from another dimension who are using the monuments as markers on a giant board game. They take her captive with a "super-rope" and offer to play her a game of "Snatchaway", with them leaving Earth if she wins. When she deduces they are weakened in the presence of gold, she steals Fort Knox, immobilizes them with the bullion, and restores the monuments to Earth. The aliens go off to play marbles with asteroids.
Appearing in Supergirl: "The Landmark Looters"
Featured Characters:
Antagonists:
- Roxxi
- Zikka
Other Characters:
- Stanhope College Co-eds
- Justice League (Mentioned only)
- Superman (Mentioned only)
Locations:
- Kentucky
- Stanhope College
- Stanhope Observatory
- New York City
- San Francisco
- Washington, D.C.
- Egypt
- Giza
- Sphinx
- Pyramid of Khufu
- Giza
- France
- India
- Taj Mahal
- Fortress of Solitude
- Museum of Gold
Items:
- Expander Ray
- Giant Pair of Tweezers
- Gold
- Gold Kryptonite (Mentioned only)
- Monopoly Board Game
- Multi-sided die
- "Snatchaway" Board Game
- Super-Rope
Vehicles:
- Locomotive
- Roxxi & Zikka's Spacecraft
Trivia
- Virus X was originally the name of a hoax perpetrated by Superboy in Superboy #106. As portrayed in "The Leper from Krypton"; Superboy actually based Virus X on a real Kryptonian disease.
See Also