Deadly Infiltration

A nightmare of a virus, filamentous encephalitis, affects the mind of anyone it infects, making them extremely aggressive. Its incubation period is exceptionally long, and it can break out at any time. The people beside you could turn into lethal killers at any moment! You need real skills to make it in a world full of danger. Without a few tricks up your sleeve, how can you survive? Where can the survivors go from here? (No evolution, no mutations. Just another story about ordinary people fighting to survive.)