Earth's Survivors America The Dead: Begins The End

When a catastrophic natural disaster looms on the near horizon, the government releases an airborne virus designed to make the human race tougher, better able to survive. It was developed for soldiers to make them better able to fight, go longer without food and water, and increase their strength.
In its virus host it bonds itself to our own cells and helps them to regenerate at an advanced rate, so that even if you die you can rise again. In non combat field tests the soldiers become aware of this, they called the phenomenon Overclocking and looked at it in a positive light. How could you look negatively at being able to live forever? A quick shot of the antidote after the heart had begun to beat again and the virus seemed to slip into remission, leaving a healed body the would come out of the virus induced coma in a few days once again its own.
But the virus does something the governments didn't consider, it never stops working, never truly becomes dormant. Even after the body has ceased any real life, the virus lives on, rebuilding it's host in a new and potentially indestructible way. Days later, what was dead becomes alive once more.
In this book those closest to Project Bluechip begin to pick up the pieces of their world and get themselves to safety. They have heard rumors of a place in the South that might offer safety, but getting there may require a price that is far too high to pay...