I can never see humanity surviving sprinters. Not if the news doesnt catch it fast enough. An outbreak in the next city over would probably be knocking on your door in hours. Your only chance is if you live in the sticks or if you're half the country away and paranoid enough to bug out when the happening threads start popping up on /pol/. Like, you'd be lucky if it catches you while you're at home. But chances are you're out in traffic, or waiting in line in the DMV, or at the grocery store or whatever mindless time consuming chore. Would you even have a full tank of gas? Let along survive the drive home or out the city? Even if you managed to get home and fortress up, you probably won't have enough food to last a week let alone a month to wait for the initial panic to escape the city. Even if you did you're fucked when the power and water go out and you're in a dark house (or worse, cuckpartment) while you hear screams and gunfire from every single direction. The best thing that'll happen to you is starve to death in your bathroom or die of dehydration on your roof.