A lot can change in a month. San Lazaro was a modern, attractive city, popular for its West Coast location and diverse population. But the winter of 2050 was unusually mild; a perfect breeding ground for the latest bout of avian flu. Parts of Asia and Europe had already been struck and now the virus had reached the United States. When the first cases emerged, the media termed the event Day 0. The virus mutated rapidly. Even the elite team of scientists sent to deal with the outbreak were helpless, unable to make any progress in finding a cure.