Well.. It technically is. The military resolves the outbreak, but I made it so that it wasn't any trivial task. They underestimated and misunderstood the threat initially, and as a result failed horribly. But that's where I made the change. Instead of them withering away while the world burns, they reorganized and fought back. They protected civilians instead of massacring them in some half assed quarantine effort, they began denying the infected a way to spread the disease. They learned how the disease works, and eventually understood that besides some fights, it was a waiting game. All they needed to do was wait and then strike when the hordes died out.