X-Minus One. Episode: And the moon be still as bright.

An expedition to Mars finds all the BRIGHT" Martians dead due to chickenpox brought to them by previous Earthmen expeditions. All the men except for one sets about destroying Martian artifacts. Ernest Kinoy wrote the radio play and the cast included John Larkin and Nelson Olmstead. Rebroadcast of the 4-22-55 program. Writer: Ray Bradbury