Oke so opinions here, thìs is about the possible outcome of how they are probably going to solve it.
I heard Katarina say ''Foster did find a cure, to the virus of 2033'' ''Not to the one we are facing now'' ''all he managed to do is cure a variation that is already dead, it's already history'' so is she basically saying they will in the future use Fosters cure to the version in 2033 with time travel to stop the disease? Is it that simple?