What Can Possibly Go Wrong?

French scientists have announced they found a new prehistoric virus in the frozen Siberian wastelands, and are planning to bring it back to life.
It may sounds like the voice over at the start of a horror film but this is true, they really have found a previously defunct virus from 30,000 years ago and are planning to 'wake it up'.
They have promised though to make sure that the virus won’t harm anyone so that's okay then, can't see how anything can possibly go wrong.