Virus

A virus was a biological disease-causing agent that could be transmitted through biological fluids (blood, etc.) or through basic contact.
== As biological weapons ==
The first humanoid race destroyed themselves and all life on their world with a genetically designed virus which eventually consumed itself. (PROSE: )
The Cybermen created a neurotropic virus to infect and convert the inhabitants of the Moonbase. (TV: )
The race known as the Viyrans were known for cataloguing and creating various biological weapons such as viruses, some of which were stored in the Amethyst Viral Containment Station. After its destruction, these viruses were scattered through time and space. The Daleks experimented on them in order to create a strain that converted lifeforms into Dalek mutants. (AUDIO: )
The Faction Paradox introduced a virus into the Third Doctor as he regenerated, altering his biodata. (PROSE: )
The Free Time organisation created a virus deadly to Time Lords, known as the Dogma Virus. (AUDIO: , )
An alien used the synthetic Kagawa Virus to take revenge on Jack Harkness and Gwen Cooper. (PROSE: )
The 456 ambassador released a virus into Thames House to kill everyone there and make a point. (TV: )
In 2014, the Sentinels of the New Dawn intended to cause an ebola virus epidemic to take power. (AUDIO: )
The Drellerans, who had suffered under the subjugation of Lord Jack Corrigan and his men, infected them with a virus which compelled them to return to Earth and spread the infection to the rest of humanity. After an encounter with the Fourth Doctor and Leela, they injected them with an anti-virus to cure the infected humans. (AUDIO: )
The Kraal scientist Styggron developed a powerful waterborne virus that killed on contact. The Kraals planned to release the virus on Earth, killing all life and eventually burning itself out allowing Marshal Chedaki to lead an invasion force to take over the planet. (TV: )
After discovering the existence of the Dalek mutants, and thus that their foes were organic, the Movellans engineered a virus that nearly destroyed the Dalek Empire. (TV: ) During the Great War, the Daleks were driven from Mars by a virus, one which destroyed the electrical insulation of their casings, that was hypothesised to be derived from the Movellan virus. (PROSE: )
During the Kotturuh crisis, the Tenth Doctor discovered that the Kotturuh's "death wave", thought of as magic by the inhabitants of the Dark Times, was in actuality, a fast-acting retrovirus. (PROSE: )
== Other occurrences ==
A virus originated from a mutation in a mood drug in the upper levels of New New York on New Earth; this one, however, was airborne. Incredibly fast and aggressive, the virus killed the entire surface population of New Earth in seven minutes flat, save for the Face of Boe and Novice Hame and those in the Undercity, which was sealed off in the nick of time. With no new victims to feed on, even the virus itself eventually died. (TV: )
A virus native to Mars known as the Flood, which apparently was sentient as a hive mind, doomed Bowie Base One's inhabitants. (TV: )
Life itself was a virus that was sent back in time to the creation of the universe. (AUDIO: )
A virus threatened the life of a dinosaur-like creature, along with a sentient cell culture (the Culture) hosted in it. The infection was eradicated by the Seventh Doctor with a dose of maxenshudicea. (COMIC: )
At Tranquility Spa, Ryan Sinclair and Bella were both infected by a virus that could infect mechanical systems as well as biological entities. (TV: )
Davros likened Christmas to a virus, one that was carried through the hearts and minds of those infected. (PROSE: )
During the year 2020, the SARS-COV2 virus spread across Earth, forcing humanity into a lockdown in an attempt to reduce infections. (PROSE: , )
 
Category:Diseases and illnesses
Category:Biology from the real world