Mar 19 2020 From: Babylon 5 Episode: Confessions and Lamentations (1995) (Season 2, Episode 18) The next 24 hours are absolutely critical if we're going to control the spread of this disease. Dr. Lazarenn says the incubation period can last several weeks or just a few days. Until then, it's absolutely invisible. Once symptoms appear, the patient expires inside 24 hours. Richard Biggs (Dr. Stephen Franklin) #Time#Medical#Disease#Death