"Virus Ricardo" is a science fiction thriller from the famous writer William Tenn. The book tells the story of a talented scientist, Ricardo, who accidentally creates a dangerous virus that threatens humanity. To prevent a global catastrophe, the hero has to find a way to destroy the creation of his own hands. Will the scientist be able to overcome his own mistakes and save the world from his own invention? Mixing an interesting plot with science fiction, "Virus Ricardo" captivates readers from the first lines and leaves deep thoughts about the future and science.