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[[File:Omega IV virus victim.jpg|thumb|right|<center>A filterable victim of the [[Omega IV]] virus]]The '''[[Omega IV]] virus native to ''' was created on the [[planet]] Omega IV which dehydrates , and was a result of a biological war conducted some hundreds of years before the body until it is reduced to white crystals known as “uremic frost”[[23rd century]].   Eventually, the virus inhabited every aspect of Omega IV's biosphere. Incubation begins when Over time, nature built up natural immunizing agents in contact with the atmosphere food, water, and soil to counterbalanced it, causing the indigenous population of [[Omega IV|Yangs and Kohms]] to be naturally immune. Onset The virus itself affects a [[humanoid]] body at the molecular level, separating water molecules from other organic compounds until there is nothing of the virus happens upon removal from Omega IVbody left but dehydrated white crystals within whatever clothing the patient had on. This is referred to as "uremic frost".   '''Symptoms include thirst, concentrated :'''* Thirst* Fever* Concentrated urine, * Sudden weight loss of weight, poor * Poor skin turgor, sunken elasticity* Sunken eyes, fever, increased * Increased pulse with decreased cardiac output* Renal failure  This virus was discovered by the [[Federation]] in [[2268]], when the ''USS Exeter'' began a survey of the planet. The ''Exeter's'' [[Captain]] was curious regarding the population's long life spans, and beamed down with a [[landing party]] ([[away team]]) to personally investigate. <br> When they returned to the ship, however, the entire Federation crew became infected, and renal failureshortly were dead or dying. Another ship, the [[USS Enterprise, NCC-1701|''USS Enterprise'']], investigated the ''Exeter's'' sudden drop in communications, finding what was left of the crew. <br> The only immunity is clue as to what happened were the [[Chief Medical Officer]]'s logs, detailing the illness and events leading up to it.  [[Leonard McCoy|Dr. Leonard McCoy]], through medical research and review of the ''Exeter's'' files, found naturally within that brief exposure to the planet's atmosphere would give a [[humanoid]] immunity to the virus: the ''Exeter'' crew simply wasn't on the planet's surface for a long enough amount of Omega IVtime.   In the end, and prolonged exposure can result in total the indigenous population's immunityto the virus had nothing to do with their long life spans; they simply had the genetics for long lives.  <br>