Question: Exactly why did The Company create and experiemnt with a dangerous and life-threatening disease such as The Shanti Virus? Surely they must have known the risks?
Question: How DID Sylar contract The Shanti Virus? Did The Company somehow infect him with it?
Chosen answer: Yes, he was intentionally infected by the Company to remove his powers and make him easier to handle.
Chosen answer: They didn't create it - it first manifested in Shanti Suresh. Their original reason for experimenting on it was probably to find a cure, just as real-world virus labs experiment on highly contagious viruses with that aim in mind. However, the effect of blocking access to powers was clearly of use to the Company in dealing with powered individuals, so their experiments also produced alternative strains of the virus, including the one used on Sylar and Niki Sanders that removed their abilities. These experiments may also have resulted in the ability negation pills given to Peter Petrelli during his time as a "guest" of the Company between seasons one and two. While the risks are obviously considerable, careful security precautions can be set up to guard against accidental release. Somebody insane enough to wish to release one intentionally is, of course, another matter entirely...
Tailkinker ★