Zombie readings

I think at the heart of a lot of zombie story's is how people will come together in a time of absolute tragedy. In a zombie Apocalypse scenario, others humans are both a huge threat, and at the same time, the only hope for survival. In the Danger Word, we can see a family sacrifice nearly everything to save a young child.  But in the end, the grandpa is undone by one of the only other people he still trusts, his friend at the gas station. In  Twenty-Three Snapshots of San Francisco, we can see that while the story is driven by the zombie outbreak, that is not the focus of the story. He doesn't spend time thinking about how he may die or how the creatures may attack him. He chooses to hold on to positive memories formed from this event. He describes the characters he meet, and the new 'family's' or gangs that he forms. In both stories, the characters were able to survive (at least for a time) by banding together, while the rest of the world is literally ripping each other apart.